chore: Upgrade Python requirements

[edx-requirements-bot]

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

Deleted obsolete pull_requests:
#441

[edx-requirements-bot]

List of packages in the PR without any issue.

• ast-serialize changes from 0.6.0 to 0.8.0
• cachetools changes from 7.1.4 to 7.1.7
• certifi changes from 2026.6.17 to 2026.7.22
• cffi changes from 2.1.0 to 2.1.1
• charset-normalizer changes from 3.4.9 to 3.5.1
• coverage[toml] changes from 7.15.2 to 7.15.4
• librt changes from 0.13.0 to 0.15.0
• mypy changes from 2.3.0 to 2.3.1
• packaging changes from 26.2 to 26.3
• pip changes from 26.1.2 to 26.2
• pip-tools changes from 7.6.0 to 7.6.1
• platformdirs changes from 4.10.1 to 4.11.3
• prompt-toolkit changes from 3.0.52 to 3.0.53
• pylint changes from 4.0.6 to 4.0.7
• python-dotenv changes from 1.2.2 to 1.2.3
• pytz changes from 2026.2 to 2026.3.post1
• sentry-sdk[flask] changes from 2.66.0 to 2.68.0
• types-pyyaml changes from 6.0.12.20260518 to 6.0.12.20260815
• wheel changes from 0.47.0 to 0.48.0

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] cryptography changes from 49.0.0 to 50.0.0
• [MAJOR] setuptools changes from 83.0.0 to 84.0.0

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.84%. Comparing base (c250728) to head (137b2f5).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #443   +/-   ##
=======================================
  Coverage   89.84%   89.84%           
=======================================
  Files          38       38           
  Lines        3103     3103           
  Branches      239      239           
=======================================
  Hits         2788     2788           
  Misses        281      281           
  Partials       34       34           

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