Django 4.2 Upgrade

[UsamaSadiq]

Description

Under the effort of Django 4.2 Upgrade, complete all of the following steps to complete the upgrade.

• 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, and GitHub Actions workflows.
• Update the pinned Django version in the requirements to Django==4.2
• Run make upgrade to update all dependencies for Django 4.2.
• Run and verify all tests are passing in the CI for both Django 4.2 and Django 3.2 to contain backward compatibility.
• Run available code-mods to fix the failing tests.
• Add conditional checks wherever needed to still have support for Django 3.2.
• Update the repo support field in the IDA Upgrade Sheet.

[feanil]

This codebase is already running as a library in edx-platform which is running 4.2 already. Also, this service is going to be deprecated. So I don't think we should do this work as it will quickly be a waste. We can leave the ticket open so people can easily see that we're aware of this until we archive this repo.

Marking it as done from the maintenance perspective.