chore: Upgrade Python requirements

[edx-requirements-bot]

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

Deleted obsolete pull_requests:
#302

[edx-requirements-bot]

List of packages in the PR without any issue.

• asgiref changes from 3.8.1 to 3.9.1
• astroid changes from 3.3.9 to 3.3.11
• build changes from 1.2.2.post1 to 1.3.0
• certifi changes from 2025.1.31 to 2025.8.3
• charset-normalizer changes from 3.4.1 to 3.4.3
• click changes from 8.1.8 to 8.2.1
• coverage[toml] changes from 7.8.0 to 7.10.3
• diff-cover changes from 9.2.4 to 9.6.0
• distlib changes from 0.3.9 to 0.4.0
• django changes from 4.2.20 to 4.2.23
• edx-i18n-tools changes from 1.7.0 to 1.9.0
• nh3 changes from 0.2.21 to 0.3.0
• pip-tools changes from 7.4.1 to 7.5.0
• platformdirs changes from 4.3.7 to 4.3.8
• pluggy changes from 1.5.0 to 1.6.0
• pycodestyle changes from 2.13.0 to 2.14.0
• pygments changes from 2.19.1 to 2.19.2
• pylint changes from 3.3.6 to 3.3.8
• pylint-plugin-utils changes from 0.8.2 to 0.9.0
• pyproject-api changes from 1.9.0 to 1.9.1
• pytest changes from 8.3.5 to 8.4.1
• pytest-cov changes from 6.1.1 to 6.2.1
• requests changes from 2.32.3 to 2.32.4
• tomlkit changes from 0.13.2 to 0.13.3
• tox changes from 4.25.0 to 4.28.4
• typing-extensions changes from 4.13.2 to 4.14.1
• urllib3 changes from 2.2.3 to 2.5.0
• virtualenv changes from 20.30.0 to 20.33.1

[edx-requirements-bot]

These Packages need manual review..

• [MAJOR] cachetools changes from 5.5.2 to 6.1.0
• [MAJOR] doc8 changes from 1.1.2 to 2.0.0
• [NEW] lxml[html-clean] (6.0.0) added to the requirements
• [NEW] pygments (2.19.2) added to the requirements
• [MAJOR] setuptools changes from 79.0.0 to 80.9.0
• [MAJOR] snowballstemmer changes from 2.2.0 to 3.0.1