Don't attempt to upgrade python3-pypowervm package, which was removed in bookworm

Jim Scaddenrequested to merge
FloydianJim/openstack-cluster-installer:bugfix/upgrade-dont-upgrade-nonexistent-package into debian/caracal

oci-cluster-upgrade-openstack-release: Don't attempt to upgrade python3-pypowervm package, which was removed in bookworm

Closes: #1076002

Edited by Jim Scadden

Merge request reports