x11-servers/xorg-server: security update: 21.1.20 -> 21.1.22

PR: 294519
Security: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001,

		CVE-2026-34002, CVE-2026-34003

Sponsored by: tipi.work

(cherry picked from commit 3322a283421a280998b6e972171ebe90451dbadc)