fix: exclude django version into macos

Author: Agus Makmun

.github/workflows/run-tests.yml

@@ -16,6 +16,9 @@ jobs:
         os: [ macos-latest, ubuntu-latest ]
         python-version: [ 3.6, 3.7, 3.8, 3.9, "3.10" ]
         django-version: [ 2.2, 3.0, 3.1, 3.2, 4.0, 4.1, 4.2, 5.0 ]
+        exclude:
+          - os: macos-latest
+            django-version: [ 4.2, 5.0 ]
 
     steps:
       - name: Install system dependencies (windows)