Fixed: https://bugzilla.redhat.com/show_bug.cgi?id=2051108
Caused by a rebase of bind, but the new idm:DL1 module lagged behind a little bit. Was fixed with the push about 9 hours ago.
Many thanks for your quick answer! I confirm that all CentOS Stream 8 IPA servers were then updated without any issue.
Cheers,
Mathieu