I recently installed MicroOS Desktop KDE. I attempted to upgrade this system
from 20210704 to 20210706 using pkcon, which included a kenel upgrade to 5.13.

This upgrade lead to an unbootable system with the following symptoms:
* In the GRUB menu, it is attempted to load the wrong kernel version (5.12.13).
* When manually editing the kernel and initrd version to 5.13.0, the initrd
enters emergency mode after some delay.
* Further investigation shows that initrd is incomplete and lacks at least
crypttab, so the partitions on the encrypted disks cannot be mounted and caused
the timeout.

The issue is reproducible, after rolling back to the last snapshot on 20210704
and attempting the upgrade again the symptoms are the same.

I have for now upgraded the system using zypper dup inside tukit. This lead to
a working upgraded system.