chore(deps): bump the minor-and-patch group with 4 updates (#87)

---
updated-dependencies:
- dependency-name: langgraph
  dependency-version: 1.2.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: langchain-openai
  dependency-version: 1.3.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: langchain-google-genai
  dependency-version: 4.2.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: uvicorn
  dependency-version: 0.51.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-and-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,15 +1,15 @@
-langgraph==1.2.7
+langgraph==1.2.9
 # Durable SQLite checkpointer for the R720 agent-team Plane-2 pipeline (design D9).
 langgraph-checkpoint-sqlite==3.1.0
 langchain-anthropic==1.4.8
-langchain-openai==1.3.3
-langchain-google-genai==4.2.6
+langchain-openai==1.3.4
+langchain-google-genai==4.2.7
 langchain-community==0.4.2
 composio-langgraph==0.17.1
 python-dotenv==1.2.2
 # WS1 agent-team HTTP API (agent_team/api.py): FastAPI app + uvicorn ASGI server.
 fastapi==0.139.0
-uvicorn==0.49.0
+uvicorn==0.51.0
 # GitHub App installation-token minting for the agent-team P3 dispatcher
 # (agent_team/github_app.py): RS256 JWT (PyJWT) signed with the App private key,
 # exchanged for a short-lived installation token. cryptography backs RS256.