@ireneisdoomed and I failed to make the (commented) test test_no_import_errors in tests/airflow/test_dag.py run. The test is meant to validate that the DAG will be imported into Airflow without errors. It used to work before the split that created the common_airflow.py script, but I think it's now having issues with the fact that it needs to import the other script.
It feels like this is a critical test to have from a CI/CD point of view.
As @d0choa mentioned: