Bump langchain-community from 0.3.29 to 0.3.30 in /tests/python_tests

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.3.29 to 0.3.30.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.3.29...langchain-core==0.3.30)

---
updated-dependencies:
- dependency-name: langchain-community
  dependency-version: 0.3.30
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

tests/python_tests/requirements.txt

@@ -9,7 +9,7 @@ hf_transfer==0.1.9
 gguf==0.17.1
 
 # rag requirements
-langchain_community==0.3.29
+langchain_community==0.3.30
 langchain-core==0.3.75
 
 # requirements for specific models