[AIRFLOW-6400] Fix pytest not working on Windows (#6964)
[AIRFLOW-6400] Fix pytest not working on Windows (#6964)

(cherry picked from commit 6dc59d507b6e57603fce2bb2eca91c4f671758e4)

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow