Fixes CVE-2023-5367 and CVE-2023-5380. See the X.Org security advisory <https://lists.x.org/archives/xorg/2023-October/003430.html> for more information. * gnu/packages/xorg.scm (xorg-server): Update to 21.1.9. Change-Id: I5786210cf1e5de4d603155fbbd076763e7ae3447 Signed-off-by: John Kehayias <john.kehayias@protonmail.com>