[edx-django-sites-extensions]: Add Support for Django 4.2

[github-actions]

Description

Follow and Complete all of the following steps for the issue to be marked as done.

• Update tox & Github action workflow using modernisers to add support for Django 4.2
• Remove any versions of Python earlier than 3.8 from tox.ini, .travis.yml, and GitHub Actions workflows.
• Update the trove classifiers in setup.py, setup.cfg or pyproject.toml files.
• Run and verify all tests are passing in the CI for Django 4.2
• Run available code-mods to fix the failing tests
• Add CHANGELOG entry with description “Support added for Django 4.2”
• Bump the package version and release a new version on GitHub & PyPI (whichever is applicable)
• Update the repo support field in the Dependency Upgrade Sheet.

[zubairshakoorarbisoft]

As pep8 is deprecated and we added pycodestyle so the whole code should be according to its rules so we will create is code changes PR first and then addd django42 support.
CC: @UsamaSadiq

[UsamaSadiq]

We can handle the quality changes separately so I removed the extra changes and merged Django 4.2 support PR.