Bump pydantic from 2.7.1 to 2.7.3 (#234)

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.7.1 to 2.7.3.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.7.1...v2.7.3)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]