You see a message in Calamares and you did not change anything.
Maybe Calamares did not change
Maybe the configuration did not change
but everything else did change.
New kernels, new systemd and also the packages that are needed to make Calamares work.
In this instance it is kpmcore that got an update. The library reference has changed.
Do not look any further. If you did not change your configuration of Calamares then that is not the reason for this message.
Just rebuilt Calamares against the new kpmcore
Tip: start calamares from the terminal and see what message you get.