Log Message:
modular-xorg-{server,xephyr}: update to 21.1.10

This release contains fixes for CVE-2023-6377 and CVE-2023-6478 as
reported in today's security advisory:
https://lists.x.org/archives/xorg-announce/2023-December/003435.html

Peter Hutterer (3):
      randr: avoid integer truncation in length check of ProcRRChange*Property
      Xi: allocate enough XkbActions for our buttons
      xserver 21.1.10

nerdopolis (1):
      xephyr: Don't check for SeatId anymore