add latest django 4.2 branch to ci

Author: mShan0

tox.ini

@@ -20,4 +20,4 @@ deps =
     django32: django==3.2.*
     django40: django>=4.0a1,<4.1
     django41: django>=4.1a1,<4.2
-    django42: django>=4.2rc1,<4.3
+    django42: django>=4.2,<4.3