📝 Update release notes

[skip ci]

Author: github-actions[bot]

release-notes.md

@@ -19,6 +19,7 @@
 
 ### Upgrades
 
+* ⬆ Bump pydantic from 2.11.7 to 2.11.9 in /backend. PR [#1891](https://github.com/fastapi/full-stack-fastapi-template/pull/1891) by [@dependabot[bot]](https://github.com/apps/dependabot).
 * ⬆ Bump @chakra-ui/react from 3.26.0 to 3.27.0 in /frontend. PR [#1890](https://github.com/fastapi/full-stack-fastapi-template/pull/1890) by [@dependabot[bot]](https://github.com/apps/dependabot).
 * ⬆ Bump axios from 1.12.0 to 1.12.2 in /frontend. PR [#1889](https://github.com/fastapi/full-stack-fastapi-template/pull/1889) by [@dependabot[bot]](https://github.com/apps/dependabot).
 * ⬆ Bump @types/node from 24.3.1 to 24.4.0 in /frontend. PR [#1886](https://github.com/fastapi/full-stack-fastapi-template/pull/1886) by [@dependabot[bot]](https://github.com/apps/dependabot).