Switch Django 4.1 testing to stable release

Author: thibaudcolas

tox.ini

@@ -13,9 +13,10 @@ commands =
 deps =
     dj32: Django>=3.2,<3.3
     dj40: Django>=4.0,<4.1
-    ; Switch to version range upon stable release.
-    ; dj41: Django>=4.1,<4.2
-    dj41: Django==4.1a1
+    dj41: Django>=4.1,<4.2
+    ; Use pre-releases until stable releases are available.
+    ; dj42: Django==4.2a1
+    ; dj42: Django>=4.2,<4.3
     djmain: https://github.com/django/django/archive/main.zip
 
 [testenv:lint]