It's not possible to directly upgrade from pre-5.3 versions to main,
since they do not have any supported OSes in common. Thus, this
dependency on the confirmation model, which risks creating a circular
dependency if we squash migrations, can be removed.
This migration references the "confirmation" app for the first time,
which means we must have migrated at least part of it by this point.
Set the migration to depend on the latest "confirmation" migration at
the time of this migration.
* Don't print the empty list for the vast majority of realms where
this is a noop.
* Make output a little more clear that this isn't revoking all
Confirmations, just those associated with deactivated users.
This is a natural follow-up to
93e8740218 - invitations sent by users
deactivated before the commit still need to be revoked, via a
migration.
The logic for finding the Confirmations to deactivated is based on
get_valid_invite_confirmations_generated_by_user in actions.py.
Tim Abbott
Alex Vandiver
Anders Kaseorg
Zixuan James Li
Mateusz Mandera