build(deps): update langchain-community requirement

Updates the requirements on [langchain-community](https://github.com/langchain-ai/langchain) to permit the latest version.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-community==0.3.21...langchain-community==0.3.22)

---
updated-dependencies:
- dependency-name: langchain-community
  dependency-version: 0.3.22
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -20,7 +20,7 @@ diskcache2 = "1.0.0"
 captcha = "0.7.1"
 langchain-openai = "0.3.14"
 langchain-anthropic = "0.3.12"
-langchain-community = "0.3.21"
+langchain-community = "0.3.22"
 langchain-deepseek = "0.1.3"
 langchain-google-genai = "2.1.3"
 langchain-mcp-adapters = "0.0.9"