ci: security updates

.github/dependabot.yml

@@ -0,0 +1,29 @@
+version: 2
+updates:
+
+  - package-ecosystem: "pip"
+    directory: "/"
+    cooldown:
+      default-days: 7
+      semver-major-days: 30
+    schedule:
+      interval: weekly
+    groups:
+      all:
+        patterns:
+        - "*"
+    commit-message:
+      prefix: "chore(deps):"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    cooldown:
+      default-days: 7
+    schedule:
+      interval: "weekly"
+    groups:
+      all:
+        patterns:
+        - "*"
+    commit-message:
+      prefix: "ci(deps):"

.github/workflows/build-to-binder.yml

@@ -8,7 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Build and cache on mybinder.org
-      uses: jupyterhub/repo2docker-action@master
+      # Action does not use versioned releases, refer to default branch
+      uses: jupyterhub/repo2docker-action@92fefcbd2b46dd9716f5263a9e740cbc972f6dd9 #2026-02-23
       with:
         NO_PUSH: true
         MYBINDERORG_TAG: ${{ github.event.ref }}

.github/workflows/preview.yml

@@ -10,13 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 #v3.6.0
 
       - name: Set up Quarto
-        uses: quarto-dev/quarto-actions/setup@v2
+        uses: quarto-dev/quarto-actions/setup@8a96df13519ee81fd526f2dfca5962811136661b #v2.2.0
 
       - name: Install Python and Dependencies
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@7f4fc3e22c37d6ff65e88745f38bd3157c663f7c #v4.9.1
         with:
           python-version: '3.12'
           cache: 'pip'
@@ -26,6 +26,6 @@ jobs:
       - run: quarto render --to html
 
       - name: Deploy preview
-        uses: rossjrw/pr-preview-action@v1
+        uses: rossjrw/pr-preview-action@ffa7509e91a3ec8dfc2e5536c4d5c1acdf7a6de9 #v1.8.1
         with:
           source-dir: _site

.github/workflows/quarto-publish.yml

@@ -9,13 +9,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2 
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 #v3.6.0
 
       - name: Set up Quarto
-        uses: quarto-dev/quarto-actions/setup@v2
+        uses: quarto-dev/quarto-actions/setup@8a96df13519ee81fd526f2dfca5962811136661b #v2.2.0
 
       - name: Install Python and Dependencies
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@7f4fc3e22c37d6ff65e88745f38bd3157c663f7c #v4.9.1
         with:
           python-version: '3.12'
           cache: 'pip'
@@ -25,7 +25,7 @@ jobs:
       - run: quarto render --to html
 
       - name: Publish to GitHub Pages (and render)
-        uses: quarto-dev/quarto-actions/publish@v2
+        uses: quarto-dev/quarto-actions/publish@8a96df13519ee81fd526f2dfca5962811136661b #v2.2.0
         with:
           target: gh-pages
         env:

.github/workflows/scorecard.yml

@@ -0,0 +1,43 @@
+name: OSSF Scorecard
+
+on:
+  push:
+    branches:
+      - main
+  schedule:
+    - cron: "30 16 * * 1" # Monday 10:30/11:30 CT
+
+permissions: read-all # Default all to readonly
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write # Allow upload to Security dashboard
+      id-token: write # Access GitHub's OIDC token to verify authenticity of result for publish
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run analysis
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      - name: Upload to code-scanning
+        uses: github/codeql-action/upload-sarif@7211b7c8077ea37d8641b6271f6a365a22a5fbfa # v4.36.0
+        with:
+          sarif_file: results.sarif