Bump the python-packages group with 4 updates

Bumps the python-packages group with 4 updates: [pydantic](https://github.com/pydantic/pydantic), [starlette](https://github.com/Kludex/starlette), [mkdocs-material](https://github.com/squidfunk/mkdocs-material) and [mkdocs-llmstxt](https://github.com/pawamoy/mkdocs-llmstxt).


Updates `pydantic` from 2.11.9 to 2.12.3
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.11.9...v2.12.3)

Updates `starlette` from 0.48.0 to 0.49.1
- [Release notes](https://github.com/Kludex/starlette/releases)
- [Changelog](https://github.com/Kludex/starlette/blob/main/docs/release-notes.md)
- [Commits](Kludex/starlette@0.48.0...0.49.1)

Updates `mkdocs-material` from 9.6.21 to 9.6.22
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.6.21...9.6.22)

Updates `mkdocs-llmstxt` from 0.3.2 to 0.4.0
- [Release notes](https://github.com/pawamoy/mkdocs-llmstxt/releases)
- [Changelog](https://github.com/pawamoy/mkdocs-llmstxt/blob/main/CHANGELOG.md)
- [Commits](pawamoy/mkdocs-llmstxt@0.3.2...0.4.0)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-version: 2.12.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: starlette
  dependency-version: 0.49.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: mkdocs-material
  dependency-version: 9.6.22
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: mkdocs-llmstxt
  dependency-version: 0.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

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

Author: dependabot[bot]