updates CI matrix

Author: saxix

.github/workflows/tests.yaml

@@ -35,8 +35,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: [ "3.11", "3.12" ]
-        django: [ "32", "42", "51" ]
+        python: [ "3.13" ]
+        django: [ "52", "42", "32" ]
         db-engine: [ "pg", "mysql" ]
     env:
       PY_VER: ${{ matrix.python}}