Revert "Pin minitest version to 5.21"
Created by: zzak
Reverts rails/rails#50978
5.22.2 was released to address this, hopefully.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: zzak
Reverts rails/rails#50978
5.22.2 was released to address this, hopefully.