Migration to Nextcloud 13 - Released

The todos are sorted by priority.

Todos

• Autoinstallation updated to use new version (done)
• Nextcloud 12.0.5 needs to be released (done)
• All customer clouds needs to be updated to the latest NC 12 version(12.0.5) (done)
  
• News App needs a NC13 update (done)
• Task App needs a updated Release (done)
  
• Accesscontrol needs update to version 1.3.0 (done)
• Automatedtagging needs update to version 1.3.0 (done)
• Retention update to version 1.2.0 (done)
• Twofactor Totp addon to version 1.4.1 (done)
• Twofactor U2f addon to version 1.5.1 (done)
• Bookmarks app needs a update (done)
• Music app needs to be updated (done)
• Nextcloud 13 needs to be official released (done)
• All new customers get Nextcloud 13 installed. (done)
• Test of the migration for existing customers (done)
  
• Eat your own Dog-food. Update our own Clouds (done)
  
• Migration all existing customers (done)