chore(deps): bump pydantic from 2.7.4 to 2.8.0

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.7.4 to 2.8.0.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.7.4...v2.8.0)

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

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

requirements.txt

@@ -28,7 +28,7 @@ langchain-experimental
 openai==1.35.7
 pinecone-client==4.1.1
 pinecone-text==0.9.0
-pydantic==2.7.4
+pydantic==2.8.0
 pydantic-settings==2.3.4
 python-dotenv==1.0.1
 pypdf==4.2.0