chore(deps): update langchain-community requirement from >=0.3.0 to >=0.4.2 (#44)

* chore(deps): update langchain-community requirement

Updates the requirements on [langchain-community](https://github.com/langchain-ai/langchain-community) to permit the latest version.
- [Release notes](https://github.com/langchain-ai/langchain-community/releases)
- [Commits](langchain-ai/langchain-community@libs/community/v0.3.23...libs/community/v0.4.2)

---
updated-dependencies:
- dependency-name: langchain-community
  dependency-version: 0.4.2
  dependency-type: direct:production
...

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

* chore(deps): refresh uv lock for langchain-community

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Konstantinos Chervatidis <kostasxerv@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 3 people

pyproject.toml

@@ -7,7 +7,7 @@ requires-python = ">=3.11"
 dependencies = [
     "langgraph>=0.2.0",
     "langchain>=0.3.0",
-    "langchain-community>=0.3.0",
+    "langchain-community>=0.4.2",
     "langchain-openai>=0.2.0",
     "langchain-ollama>=0.1.0",
     "tavily-python>=0.5.0",