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.

• celery[redis] changes from 5.6.0 to 5.6.2
• kombu[redis] changes from 5.6.1 to 5.6.2
• librt changes from 0.7.5 to 0.7.7
• pylint-django changes from 2.6.1 to 2.7.0
• scriv changes from 1.7.0 to 1.8.0

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] astroid changes from 3.3.11 to 4.0.3
• [MAJOR] certifi changes from 2025.11.12 to 2026.1.4
• [REMOVED] exceptiongroup (1.3.1) removed from the requirements
• [MAJOR] glom changes from 24.11.0 to 25.12.0
• [MAJOR] isort changes from 6.1.0 to 7.0.0
• [MAJOR] pylint changes from 3.3.9 to 4.0.4

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.84%. Comparing base (5cb30d6) to head (b2cbafb).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #402   +/-   ##
=======================================
  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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