ci: Limit django5 tests to Python >= 3.10

Author: kgilpin

tox.ini

@@ -2,7 +2,7 @@
 isolated_build = true
 # The *-web environments test the latest versions of Django and Flask with the full test suite. For
 # older version of the web frameworks, just run the tests that are specific to them.
-envlist = py3{8,9,10,11,12}-{web,django3,django4,django5,flask2,sqlalchemy1},lint
+envlist = py3{10,11,12}-{django5}, py3{8,9,10,11,12}-{web,django3,django4,flask2,sqlalchemy1},lint
 
 [web-deps]
 deps=