Bump pydantic from 2.8.2 to 2.9.1

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.8.2 to 2.9.1.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.8.2...v2.9.1)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

setup.py

@@ -75,7 +75,7 @@
     'yamllint==1.35.1',
     'moto>=4.0,<6',
     'fastapi==0.112.2',
-    'pydantic==2.8.2',
+    'pydantic==2.9.1',
     'uvicorn==0.30.6',
     'pytest-split==0.9.0',
 ]