chore: Post Django 3.2 cleanup

[edx-requirements-bot]

Additional information from script execution

Python code cleanup by the cleanup-python-code Jenkins job.

This pull request was generated by the cleanup-python-code Jenkins job, which ran

modernize_github_actions_django; modernize_github_actions; modernize_tox; modernize_setup_file; sed -i -E 's/django(<|>)[0-9]*\.[0-9]+/django<4.0/gi' ./requirements/constraints.txt; make upgrade;

The following packages were installed:
edx-repo-tools