chore: Upgrade Python requirements

[edx-requirements-bot]

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

Deleted obsolete pull_requests:
#273

[edx-requirements-bot]

List of packages in the PR without any issue.

• build changes from 1.4.0 to 1.5.0
• click changes from 8.3.1 to 8.4.1
• coverage[toml] changes from 7.13.4 to 7.14.1
• lxml changes from 6.0.2 to 6.1.1
• mako changes from 1.3.10 to 1.3.12
• packaging changes from 26.0 to 26.2
• pip changes from 26.0.1 to 26.1.2
• 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
• pytz changes from 2026.1.post1 to 2026.2
• setuptools changes from 82.0.0 to 82.0.1
• wheel changes from 0.46.3 to 0.47.0

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] simplejson changes from 3.20.2 to 4.1.1
• [MAJOR] web-fragments changes from 3.1.0 to 4.0.0
• [MAJOR] xblock changes from 5.3.0 to 6.1.0

[edx-requirements-bot]

Closing obsolete PR.