Security update for xorg-x11-server

This update for xorg-x11-server fixes the following issues:

- CVE-2021-3472: XChangeFeedbackControl Integer Underflow Privilege Escalation (bsc#1180128)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Fixed bugs
bnc#1180128
VUL-0: EMBARGOED: CVE-2021-3472: xorg-x11-server: XChangeFeedbackControl Integer Underflow Privilege Escalation (ZDI-CAN-12549)
Selected Binaries
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