My vote is for a batch of PRs, not just a single one (which would have been impossible to review if they were all combined) - the refactoring work @eumiro has been doing recently. He's done 69 this month already!
https://github.com/apache/airflow/pulls?q=is%3Apr+author%3Aeumiro+merged%3A2023-08-01..2023-08-31
