Bump langchain-community in /ai/gen-ai-agents/custom-rag-agent

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.3.26 to 0.3.27.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==0.3.26...langchain==0.3.27)

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

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

Author: dependabot[bot]

ai/gen-ai-agents/custom-rag-agent/requirements.txt

@@ -87,7 +87,7 @@ jupyterlab_widgets==3.0.13
 kiwisolver==1.4.8
 lab==8.4
 langchain==0.3.26
-langchain-community==0.3.26
+langchain-community==0.3.27
 langchain-core==0.3.66
 langchain-mcp-adapters==0.1.9
 langchain-text-splitters==0.3.8