Security update for sddm
This update for sddm fixes the following issue:
- Fix X not having access control on startup (boo#1177201, CVE-2020-28049).
- Submitted by Fabian Vogt (Vogtinator)
Fixed bugs
bnc#1177201
VUL-0: CVE-2020-28049: xorg-x11-server: Xorg with -auth and -displayfd starts up without access control