chore: Upgrade Python requirements

[edx-requirements-bot]

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

Deleted obsolete pull_requests:
#274

[edx-requirements-bot]

List of packages in the PR without any issue.

• astroid changes from 4.0.3 to 4.0.4
• build changes from 1.4.0 to 1.5.1
• click changes from 8.3.1 to 8.4.2
• coverage[toml] changes from 7.13.1 to 7.15.1
• dill changes from 0.4.0 to 0.4.1
• lxml changes from 6.0.2 to 6.1.1
• mako changes from 1.3.10 to 1.3.12
• pip-tools changes from 7.5.2 to 7.5.3
• platformdirs changes from 4.5.1 to 4.10.0
• pygments changes from 2.19.2 to 2.20.0
• pylint changes from 4.0.4 to 4.0.6
• pylint-django changes from 2.7.0 to 2.8.0
• pytest changes from 9.0.2 to 9.1.1
• pytest-cov changes from 7.0.0 to 7.1.0
• stevedore changes from 5.6.0 to 5.9.0
• tomlkit changes from 0.14.0 to 0.15.0
• webob changes from 1.8.9 to 1.8.10
• wheel changes from 0.45.1 to 0.47.0

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] code-annotations changes from 2.3.0 to 3.0.0
• [NEW] dnspython (2.8.0) added to the requirements
• [MAJOR] edx-lint changes from 5.6.0 to 6.1.0
• [NEW] edx-opaque-keys (4.0.0) added to the requirements
• [MAJOR] isort changes from 7.0.0 to 8.0.1
• [MAJOR] lazy changes from 1.6 to 2.0
• [MAJOR] packaging changes from 25.0 to 26.2
• [MAJOR] pip changes from 25.3 to 26.1.2
• [NEW] pymongo (4.17.0) added to the requirements
• [MAJOR] pytz changes from 2025.2 to 2026.2
• [MAJOR] setuptools changes from 80.9.0 to 83.0.0
• [MAJOR] simplejson changes from 3.20.2 to 4.1.1
• [NEW] stevedore (5.9.0) added to the requirements
• [NEW] typing-extensions (4.16.0) added to the requirements
• [REMOVED] web-fragments (3.1.0) removed from the requirements
• [MAJOR] xblock changes from 5.3.0 to 6.3.1