You can take one of the linux packages: Linux packages status
There is no automatic routine implemented, you could write a small script that does this job for you (perhaps there is such a script somewhere) by implementing the steps from the manual upgrade:
https://docs.nextcloud.com/server/11/admin_manual/maintenance/manual_upgrade.html?highlight=manual%20upgrade
I wouldn’t run a fully automated update/upgrade procedure, rather an automatic notification and then run start the script manually (after a backup).