Dear Airflow Community, We have just dropped Python 3.9 support on the main branch. https://github.com/apache/airflow/pull/52072
*Contributors* -> Please rebase your open PRs. *Maintainers* -> Make sure you avoid merging PRs that were not rebased. No action is needed for PRs that target v3-0-test / v2-11-test branches. Thanks, Elad
