Add Django 6.0 to test matrix

Author: ulgens

.github/workflows/ci.yml

@@ -42,6 +42,7 @@ jobs:
           - 'django==5.0'
           - 'django==5.1'
           - 'django==5.2'
+          - 'django==6.0'
 
         include:
           - python-version: '3.13'
@@ -51,6 +52,12 @@ jobs:
             django-version: "git+https://github.com/django/django.git@main#egg=Django"
             experimental: true
 
+        exclude:
+          - python-version: '3.10'
+            django-version: '6.0'
+          - python-version: '3.11'
+            django-version: '6.0'
+
     env:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
     steps: