Bump langchain-community

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.2.19 to 0.3.27.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-community==0.2.19...langchain==0.3.27)

---
updated-dependencies:
- dependency-name: langchain-community
  dependency-version: 0.3.27
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ai/generative-ai-service/patient-letter-extraction/requirements.txt

@@ -2,7 +2,7 @@ pandas==2.1.4
 jsonschema==4.19.2
 streamlit==1.37.0
 langchain==0.2.5
-langchain-community==0.2.19
+langchain-community==0.3.27
 pdf2image==1.16.3
 python-docx==0.8.11
 poppler-utils==22.12.0