Bump langchain-community from 0.2.7 to 0.3.0 in /web

Bumps [langchain-community](https://github.com/langchain-ai/langchain) from 0.2.7 to 0.3.0.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-community==0.2.7...langchain-community==0.3.0)

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

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

web/requirements.txt

@@ -17,7 +17,7 @@ drf-yasg==1.21.3
 gunicorn==22.0.0
 gevent==24.2.1
 humanize==4.3.0
-langchain-community==0.2.7
+langchain-community==0.3.0
 Markdown==3.3.4
 metafinder==1.2
 netaddr==0.8.0