Bump pydantic from 2.7.2 to 2.7.3 (mosaicml#696)

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.7.2 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@v2.7.2...v2.7.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Saaketh Narayan <saaketh.narayan@databricks.com>

setup.py

@@ -75,7 +75,7 @@
     'yamllint==1.35.1',
     'moto>=4.0,<6',
     'fastapi==0.111.0',
-    'pydantic==2.7.2',
+    'pydantic==2.7.3',
     'uvicorn==0.30.1',
     'pytest-split==0.8.2',
 ]