run tests via runtests.py

Author: gasman

.github/workflows/test.yml

@@ -69,7 +69,7 @@ jobs:
           pip install "${{ matrix.wagtail }}"
           pip install -e .[testing]
       - name: Test
-        run: python ./setup.py test
+        run: ./runtests.py
         env:
           DATABASE_ENGINE: django.db.backends.${{ matrix.database }}
           DATABASE_HOST: localhost