Exclude inapplicable versions

Author: kytta

.github/workflows/test.yml

@@ -11,6 +11,26 @@ jobs:
       matrix:
         python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
         django-version: ['3.2', '4.0', '4.1', 'main']
+        exclude:
+          - django-version: '3.2'
+            python-version: '3.11'
+
+          - django-version: '4.0'
+            python-version: '3.6'
+          - django-version: '4.0'
+            python-version: '3.7'
+          - django-version: '4.0'
+            python-version: '3.11'
+
+          - django-version: '4.1'
+            python-version: '3.6'
+          - django-version: '4.1'
+            python-version: '3.7'
+
+          - django-version: 'main'
+            python-version: '3.6'
+          - django-version: 'main'
+            python-version: '3.7'
 
     steps:
     - uses: actions/checkout@v3