chore(catalog): record data-rest-4.5.9

[github-actions]

Adds data-rest 4.5.9 → data-rest-4.5.9 and the converted tree under markdown/data-rest/4.5.9/, published by the release workflow.

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Summary by cubic

Records the data-rest 4.5.9 release in the catalog and adds its converted documentation under markdown/data-rest/4.5.9/.

• Adds a data-rest entry with the data-rest-4.5.9 tag and release timestamp.
• Publishes 26 converted pages from the upstream Spring AsciiDoc, including license and notice files.

^{Written for commit a979b7d. Summary will update on new commits.}

[greptile-apps]

PR author is in the excluded authors list.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[amondnet]

Superseded by the combined catalog PR for the linked Spring Data store backfill.