[v3-0-test] Fix whitespace handling in DAG owners parsing for multipl…#52221

pierrejeambrun merged 1 commit intoapache:v3-0-testapache/airflow:v3-0-testfrom

potiuk:backport-b1be383-v3-0-testpotiuk/airflow:backport-b1be383-v3-0-testCopy head branch name to clipboard