Update the tox environments

[gvangool]

Motivation:

Python 3.9 is no longer supported on Django main (5.0).
From Python Compatibility of the 5.0 (pre) release notes:

The Django 4.2.x series is the last to support Python 3.8 and 3.9.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you updated the documentation related to the changes you have made?
• Have you written new tests for your core changes, as applicable?
• Have you successfully run tests with your changes locally?

[ArtyomVancyan]

Hi @gvangool, I liked the reasonable changes you have made. Also, I have made some additional changes related to the topic - I have changed the local build strategy to avoid issues that are not visible with the old one. Thanks for your contribution!