Upgrade to mailcow 🌌🐮 Mooay 2022 Update

So very easy upgrade, done within no time and no problems whatsoever with this dockerized mailcow instance.
🌌🐮 Mooay 2022 Update – The Tag Update
🌌🐮 Mooay 2022 Update – The Tag Update | Revision A
🌌🐮 Mooay 2022 Update - The Tag Update | Revision B (2022-05b)