This change updates us to run on all versions of Django between 4.2 and

6.0, and Python between 3.10 and 3.14. These combinations have all been

added to the tox config.
There are a few fixes to support changes that occurred in Django 5.2 and

6.0:

The add_q method has additional parameters (in some cases) that we

  need to include on our spy in order for the signature to match.
Some subqueries have AS "pk" added to them in 5.2+
Django 6.0 seems to optimize out some subqueries, requiring a branch

  in the test expectations.

I've also added __test__ = False to TestModel to suppress pytest

warnings about collection.
Based in part on work by Petr Dlouhy at

https://github.com/beanbaginc/django-assert-queries/pull/3/

Ran unit tests on all supported combinations of Python and Django.