Version 11.0.0-1 of designate-dashboard is marked for autoremoval from testing on Thu 13 May 2021. It depends (transitively) on python-novaclient, affected by #986143. You should try to prevent the removal by fixing these RC bugs.
Last update: 2021-04-15
A new upstream version is available: 12.0.0~rc1high
A new upstream version 12.0.0~rc1 is available, you should consider packaging it.