After applying update, my shell was BASH.
To get back with ZSH:
type -a zsh ## find path to zsh
chsh -s /usr/bin/zsh ## change bash to zsh
See https://www.cyberciti.biz/faq/change-my-default-shell-in-linux-using-chsh/.
Note that default font color is not green anymore but white.
Just switch to “Breath” profile in Konsole and set it by default to get your colors back.