Bump Kotlin to 2.4.20 and Netty to 4.1.137.Final

[RafaRuiz]

Summary

Fixes the two Dependabot security alerts by bumping the versions in gradle/libs.versions.toml:

Dependency	Before	After	CVE
org.jetbrains.kotlin:kotlin-gradle-plugin	2.2.10	2.4.20	CVE-2026-53914
io.netty:netty-codec-http	4.1.136.Final	4.1.137.Final	CVE-2026-59903

Notes:

• The alert suggests Kotlin 2.4.20-Beta1; the stable 2.4.20 release is used instead.
• The Kotlin version only drives the serialization compiler plugin (AGP 9 provides the Kotlin compiler). It resolves to 2.4.20 across the plugin classpath and builds cleanly against AGP 9.1.0.
• Netty is transitive from the Doordeck headless SDK and pinned via the root resolutionStrategy; it now resolves to 4.1.137.Final.

Test plan

• ./gradlew build passes locally (lint + unit tests, both modules)
• CI green

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Scorecard details

Package	Version	Score	Details
maven/io.netty:netty-buffer	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-codec	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-codec-http	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-codec-http2	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-codec-socks	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-common	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-handler	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-handler-proxy	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-resolver	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-transport	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/io.netty:netty-transport-native-unix-common	4.1.137.Final	🟢 6.8	Details Check Score Reason Maintained 🟢 10 30 commit(s) and 9 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 5 Found 17/30 approved changesets -- score normalized to 5 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Binary-Artifacts 🟢 9 binaries present in source code CII-Best-Practices 🟢 2 badge detected: InProgress License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Security-Policy 🟢 10 security policy file detected Pinned-Dependencies 🟢 5 dependency not pinned by hash detected -- score normalized to 5 Packaging 🟢 10 packaging workflow detected SAST 🟢 9 SAST tool detected but not run on all commits
maven/org.jetbrains.kotlin:kotlin-build-tools-api	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-gradle-plugin-annotations	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-gradle-plugin-api	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-gradle-plugins-bom	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-native-utils	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-serialization	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-tooling-core	2.4.20	Unknown	Unknown
maven/org.jetbrains.kotlin:kotlin-util-io	2.4.20	Unknown	Unknown

Scanned Files

• settings.gradle.kts