chore(deps): update couchbase, pydantic, uvicorn (#265)

Conservative bumps to latest stable compatible versions:
- couchbase 4.6.2 -> 4.6.3
- pydantic 2.13.4 -> 2.13.5
- uvicorn 0.52.3 -> 0.52.4

Hermes task: t_aacfe2c9

Co-authored-by: dex-the-ai <dex-the-ai@users.noreply.github.com>

Author: dex-the-ai

requirements.txt

@@ -1,8 +1,8 @@
-couchbase==4.6.2
+couchbase==4.6.3
 fastapi==0.141.1
 httpx==0.28.1
-pydantic==2.13.4
+pydantic==2.13.5
 pydantic-settings==2.15.0
 pytest==9.1.1
 python-dotenv==1.2.3
-uvicorn==0.52.3
+uvicorn==0.52.4