Update plasma5-workspace to version 5.23.1 / rev 177 via SR 926765
https://build.opensuse.org/request/show/926765
by user Vogtinator + dimstar_suse
- Add back X11 root window properties until firefox is adjusted
(boo#1191825):
* 0001-Revert-Drop-setupX11-from-startplasma-waylandsession.patch
* 0002-Revert-Drop-X11-root-properties-for-KDE-full-session.patch (forwarded request 926668 from Vogtinator)