chore: Upgrade Python requirements

[edx-requirements-bot]

Python requirements update. Please review the changelogs for the upgraded packages.

[edx-requirements-bot]

List of packages in the PR without any issue.

• keyring changes from 25.4.1 to 25.5.0
  • pip changes from 24.2 to 24.3.1
  • pydata-sphinx-theme changes from 0.15.4 to 0.16.0
  • rich changes from 13.9.2 to 13.9.3
  • starlette changes from 0.41.0 to 0.41.2
  • tox changes from 4.23.0 to 4.23.2

[edx-requirements-bot]

Closing obsolete PR.