[Django 4.2 Support] Create modernisers and codemods

[UsamaSadiq]

Description

Under the effort of Django 4.2 upgrade to add Django 4.2 support in unit tests CI and tox envs in all the repos, we need to create following modernisers and code-mods.

modernisers

Beta Give feedback

1. Write tox moderniser for Django 4.2 support openedx/repo-tools#389
   3 of 3
   +0
   
2. Write Github Actions moderniser for Django 4.2 support openedx/repo-tools#390
   4 of 4
   +0
   

Codemods

Beta Give feedback

1. [Django 4.2 Codemod] django.core.cache.backends.memcached.MemcachedCache openedx/repo-tools#396
   0 of 2
   +0
   
2. [Django 4.2 Codemod] Remove providing_args from Django.dispatch.signal call openedx/repo-tools#411
   +0