ci: Update Django/Python test matrix

Author: justinmayer

.github/workflows/main.yml

@@ -17,14 +17,24 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
+          - "3.13"
         django-version:
-          - "3.2"
-          - "4.1"
           - "4.2"
+          - "5.0"
+          - "5.1"
         exclude:
-          # Django 3.2 is compatible with Python <= 3.10
-          - python-version: "3.11"
-            django-version: "3.2"
+          # Django 4.2 is compatible with Python <= 3.12
+          - python-version: "3.13"
+            django-version: "4.2"
+          # Django 5.0 is compatible with Python 3.10, 3.11, & 3.12
+          - python-version: "3.9"
+            django-version: "5.0"
+          - python-version: "3.13"
+            django-version: "5.0"
+          # Django 5.1 is compatible with Python >= 3.10
+          - python-version: "3.9"
+            django-version: "5.1"
 
     steps:
       - uses: actions/checkout@v3