Announce support for intermediate Django versions

Although we don't run tests for those, we would fix any bug discovered
on those versions.

Fixes: #1093

Author: rbarrois

setup.cfg

@@ -16,6 +16,7 @@ classifiers =
     Development Status :: 5 - Production/Stable
     Framework :: Django
     Framework :: Django :: 4.2
+    Framework :: Django :: 5.0
     Framework :: Django :: 5.1
     Intended Audience :: Developers
     License :: OSI Approved :: MIT License