Modernize supported Python and Django Versions

[johnthagen]

Follow on to #172

• Add support for Python 3.11
• Drop support for EOL Django 2.2, 3.0, 3.1, 4.0
• Add support for Django 4.1, 4.2

[johnthagen]

@hishnash In order to merge this, you will need to remove UnitTests (3.10.5, Django==4.0.6) from the required checks in the GitHub project.

Please squash the commits through the GitHub UI when you merge.

[hishnash]

@johnthagen thank you for doing this :)