[v3-0-test] Explicitly set the JWTGenerator private_key field to None for service logs retrieval (#54442)#54444

ashb merged 1 commit intov3-0-testapache/airflow:v3-0-testfrom

backport-4fa0d01-v3-0-testapache/airflow:backport-4fa0d01-v3-0-testCopy head branch name to clipboard