Bump the python-packages group with 3 updates

Bumps the python-packages group with 3 updates: [pydantic](https://github.com/pydantic/pydantic), [pytest](https://github.com/pytest-dev/pytest) and [starlette](https://github.com/encode/starlette).


Updates `pydantic` from 2.8.2 to 2.9.2
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.8.2...v2.9.2)

Updates `pytest` from 8.3.2 to 8.3.3
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.2...8.3.3)

Updates `starlette` from 0.38.3 to 0.39.2
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.38.3...0.39.2)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: starlette
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <[email protected]>