chore(deps): Bump pydantic from 2.7.1 to 2.7.4

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.7.1 to 2.7.4.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.7.1...v2.7.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -13,7 +13,7 @@ opentelemetry-instrumentation-httpx==0.46b0
 opentelemetry-instrumentation-openai==0.21.4
 pikepdf==9.0.0
 pydantic-settings==2.2.1
-pydantic==2.7.1
+pydantic==2.7.4
 python-dotenv==1.0.1
 pyyaml==6.0.1
 tiktoken==0.7.0