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.

• coverage[toml] changes from 7.13.5 to 7.14.0
• idna changes from 3.13 to 3.14
• librt changes from 0.9.0 to 0.11.0
• markdown-it-py changes from 4.0.0 to 4.2.0
• pip changes from 26.1 to 26.1.1
• pytz changes from 2026.1.post1 to 2026.2
• sentry-sdk[flask] changes from 2.58.0 to 2.59.0
• tomlkit changes from 0.14.0 to 0.15.0
• types-pyyaml changes from 6.0.12.20260408 to 6.0.12.20260510
• types-requests changes from 2.33.0.20260503 to 2.33.0.20260508
• urllib3 changes from 2.6.3 to 2.7.0

[edx-requirements-bot]

These Packages need manual review..

• [NEW] ast-serialize (0.3.0) added to the requirements
• [MAJOR] cryptography changes from 47.0.0 to 48.0.0
• [MAJOR] gunicorn changes from 25.3.0 to 26.0.0
• [MAJOR] mypy changes from 1.20.2 to 2.0.0

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.84%. Comparing base (c02847c) to head (35b8f2d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #421   +/-   ##
=======================================
  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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