Retires backups that match the supplied filters. Filters are exact (case-insensitive) and combined with AND.
reason is required. At least one filter is required.

Set dry_run to true to preview every match without retiring anything.

A live request retires every match and returns the full retired set.

Tenant-level API keys are allowed. A user-tied key must belong to a tenant administrator or a user with the
Retire Backup permission.