chore(deps): bump the minor-and-patch group across 1 directory with 6 updates

Bumps the minor-and-patch group with 6 updates in the / directory:

| Package | From | To |
| --- | --- | --- |
| [langchain-anthropic](https://github.com/langchain-ai/langchain) | `1.4.6` | `1.4.7` |
| [langchain-openai](https://github.com/langchain-ai/langchain) | `1.3.2` | `1.3.3` |
| [langchain-google-genai](https://github.com/langchain-ai/langchain-google) | `4.2.5` | `4.2.6` |
| [composio-langgraph](https://github.com/ComposioHQ/composio) | `0.15.0` | `0.16.0` |
| [fastapi](https://github.com/fastapi/fastapi) | `0.136.1` | `0.138.1` |
| [uvicorn](https://github.com/Kludex/uvicorn) | `0.46.0` | `0.49.0` |



Updates `langchain-anthropic` from 1.4.6 to 1.4.7
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/compare/langchain-anthropic==1.4.6...langchain-anthropic==1.4.7)

Updates `langchain-openai` from 1.3.2 to 1.3.3
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/compare/langchain-openai==1.3.2...langchain-openai==1.3.3)

Updates `langchain-google-genai` from 4.2.5 to 4.2.6
- [Release notes](https://github.com/langchain-ai/langchain-google/releases)
- [Commits](https://github.com/langchain-ai/langchain-google/compare/libs/genai/v4.2.5...libs/genai/v4.2.6)

Updates `composio-langgraph` from 0.15.0 to 0.16.0
- [Release notes](https://github.com/ComposioHQ/composio/releases)
- [Commits](https://github.com/ComposioHQ/composio/compare/py@0.15.0...py@0.16.0)

Updates `fastapi` from 0.136.1 to 0.138.1
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](https://github.com/fastapi/fastapi/compare/0.136.1...0.138.1)

Updates `uvicorn` from 0.46.0 to 0.49.0
- [Release notes](https://github.com/Kludex/uvicorn/releases)
- [Changelog](https://github.com/Kludex/uvicorn/blob/main/docs/release-notes.md)
- [Commits](https://github.com/Kludex/uvicorn/compare/0.46.0...0.49.0)

---
updated-dependencies:
- dependency-name: composio-langgraph
  dependency-version: 0.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-and-patch
- dependency-name: fastapi
  dependency-version: 0.138.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-and-patch
- dependency-name: langchain-anthropic
  dependency-version: 1.4.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: langchain-google-genai
  dependency-version: 4.2.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: langchain-openai
  dependency-version: 1.3.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: uvicorn
  dependency-version: 0.49.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-and-patch
...

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

requirements.txt

@@ -1,15 +1,15 @@
 langgraph==1.2.6
 # Durable SQLite checkpointer for the R720 agent-team Plane-2 pipeline (design D9).
 langgraph-checkpoint-sqlite==3.1.0
-langchain-anthropic==1.4.6
-langchain-openai==1.3.2
-langchain-google-genai==4.2.5
+langchain-anthropic==1.4.7
+langchain-openai==1.3.3
+langchain-google-genai==4.2.6
 langchain-community==0.4.2
-composio-langgraph==0.15.0
+composio-langgraph==0.16.0
 python-dotenv==1.2.2
 # WS1 agent-team HTTP API (agent_team/api.py): FastAPI app + uvicorn ASGI server.
-fastapi==0.136.1
-uvicorn==0.46.0
+fastapi==0.138.1
+uvicorn==0.49.0
 # 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.