gnu: xorg-server-xwayland: Update to 23.2.3 [security fixes].

Fixes CVE-2023-5367 and CVE-2023-5380.  See the X.Org security advisory
<https://lists.x.org/archives/xorg-announce/2023-October/003430.html> for more
information.

Also fixes CVE-2023-6377 and CVE-2023-6478. See the X.Org security advisory
<https://lists.x.org/archives/xorg-announce/2023-December/003435.html> for
more information.

* gnu/packages/xorg.scm (xorg-server-xwayland): Update to 23.2.3.
[inputs]: Add libxcvt.
[properties]: Set upstream-name.

Change-Id: I05427b1d93d07a4210466f290621c1ca5effb4af
Signed-off-by: John Kehayias <john.kehayias@protonmail.com>

gnu/packages/xorg.scm

@@ -5250,7 +5250,7 @@ EGLStream families of extensions.")
 (define-public xorg-server-xwayland
   (package
     (name "xorg-server-xwayland")
-    (version "21.1.3")
+    (version "23.2.3")
     (source
      (origin
        (method url-fetch)
@@ -5258,7 +5258,7 @@ EGLStream families of extensions.")
                            "/xserver/xwayland-" version ".tar.xz"))
        (sha256
         (base32
-         "18pqvg76grbsyxa3mm3j06i1l8cwb28nbn2gcnqpsk7x75zpbhpb"))))
+         "00p30yyikh7h9xsqgir66xb06pspgjlibv1mi0n42irc4fkrm7gb"))))
     (inputs (list font-dejavu
                   dbus
                   egl-wayland
@@ -5268,6 +5268,7 @@ EGLStream families of extensions.")
                   libepoxy
                   libgcrypt
                   libtirpc
+                  libxcvt
                   libxfont2
                   libxkbfile
                   pixman
@@ -5283,6 +5284,7 @@ EGLStream families of extensions.")
                                  wayland
                                  wayland-protocols)
                            '())))
+    (properties '((upstream-name . "xwayland")))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags