chore: Upgrade Python requirements

[edx-requirements-bot]

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

Deleted obsolete pull_requests:
#259

[edx-requirements-bot]

List of packages in the PR without any issue.

• anyio changes from 4.12.1 to 4.13.0
• build changes from 1.4.0 to 1.4.2
• cachetools changes from 7.0.3 to 7.0.5
• celery changes from 5.6.2 to 5.6.3
• charset-normalizer changes from 3.4.5 to 3.4.7
• click changes from 8.3.1 to 8.3.2
• coverage[toml] changes from 7.13.4 to 7.13.5
• django changes from 5.2.12 to 5.2.13
• filelock changes from 3.25.0 to 3.25.2
• pygments changes from 2.19.2 to 2.20.0
• pytest changes from 9.0.2 to 9.0.3
• pytest-cov changes from 7.0.0 to 7.1.0
• python-discovery changes from 1.1.0 to 1.2.2
• requests changes from 2.32.5 to 2.33.1
• setuptools changes from 82.0.0 to 82.0.1
• tox changes from 4.49.0 to 4.52.0
• virtualenv changes from 21.1.0 to 21.2.0

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] attrs changes from 25.4.0 to 26.1.0
• [MAJOR] code-annotations changes from 2.3.2 to 3.0.0
• [MAJOR] edx-lint changes from 5.6.0 to 6.0.0
• [MAJOR] edx-opaque-keys[django] changes from 3.1.0 to 4.0.0
• [MAJOR] edx-toggles changes from 5.4.1 to 6.0.0
• [MAJOR] event-tracking changes from 3.3.0 to 4.0.0
• [MAJOR] openedx-events changes from 10.5.0 to 11.1.0
• [MAJOR] tzdata changes from 2025.3 to 2026.1