Update tests/test_migrations.py

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: fsbraun

tests/test_migrations.py

@@ -5,6 +5,7 @@
 
 
 class MigrationTestCase(TestCase):
+    # Override MIGRATION_MODULES to {} to ensure all migrations are detected and not skipped for any app.
     @override_settings(MIGRATION_MODULES={})
     def test_for_missing_migrations(self):
         output = StringIO()