chore(deps): upgrade all dependencies to latest versions

Upgraded 37 packages including:
- asyncpg: v0.30.0 → v0.31.0
- fastapi: v0.121.2 → v0.123.9
- litellm: v1.80.0 → v1.80.7
- marimo: v0.17.8 → v0.18.2
- mlflow: v3.6.0 → v3.7.0
- ruff: v0.14.5 → v0.14.8

All tests pass with Python 3.13.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: hironow