Bump pydantic from 2.12.3 to 2.12.4

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.12.3 to 2.12.4.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/v2.12.4/HISTORY.md)
- [Commits](pydantic/pydantic@v2.12.3...v2.12.4)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-version: 2.12.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

AI-Travel-Agent/requirements.txt

@@ -5,7 +5,7 @@ langchain==1.0.2
 langchain-community==0.3.27
 streamlit==1.51.0
 huggingface-hub==1.1.4
-pydantic==2.12.3
+pydantic==2.12.4
 wikipedia==1.4.0
 google-search-results==2.4.2
 hf-xet==1.2.0