Bump langchain-community from 0.0.16 to 0.0.27

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.0.16 to 0.0.27.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/commits)

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

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

requirements.txt

@@ -21,7 +21,7 @@ rouge-score==0.1.2
 hnswlib==0.7.0
 pypdf==3.17.0
 langchain==0.0.329
-langchain-community==0.0.16
+langchain-community==0.0.27
 sentence-transformers==2.2.2
 beautifulsoup4==4.12.2
 lxml==4.9.3