fix: resolve Dependabot security vulnerabilities

[mplatzer]

Summary of Changes

• Upgraded dependencies in uv.lock to resolve 31 GitHub Dependabot security vulnerability alerts across 9 packages:
  • pillow (12.2.0 -> 12.3.0)
  • cryptography (47.0.0 -> 50.0.1)
  • torch (2.11.0 -> 2.13.0)
  • tornado (6.5.5 -> 6.5.8)
  • urllib3 (2.6.3 -> 2.7.0)
  • pymdown-extensions (10.21.2 -> 11.0.2)
  • soupsieve (2.8.3 -> 2.9.2)
  • setuptools (81.0.0 -> 84.0.0)
  • idna (3.13 -> 3.19)
• In mostlyai/qa/_accuracy.py, added safe overflow handling (OverflowError, pd.errors.OutOfBoundsDatetime) during datetime bin adjustment on maximum timestamp bounds (pd.Timestamp.max).
• In README.md, updated the Linux CPU install command with torch==2.13.0+cpu and torchvision==0.28.0+cpu.

Verification

• pre-commit run --all-files passed.
• Unit tests (pytest tests/unit) passed.