x11-servers/xorg-server: security update: 21.1.22 -> 21.1.23

PR: 295781
Approved by: x11 (arrowd, maintainer)
Security: 592ced15-5e20-11f1-86a2-589cfc10a551

Sponsored by: tipi.work

(cherry picked from commit 6b5ca4857e8be0ef58b83c8776dad2ba6c8c2192)