gnu: xorg-server: Update to 1.20.5.

* gnu/packages/xorg.scm (xorg-server): Update to 1.20.5.
(xorg-server-for-tests): Stay on 1.20.4.

gnu/packages/xorg.scm

@@ -5067,7 +5067,7 @@ over Xlib, including:
 (define-public xorg-server
   (package
     (name "xorg-server")
-    (version "1.20.4")
+    (version "1.20.5")
     (source
       (origin
         (method url-fetch)
@@ -5076,7 +5076,7 @@ over Xlib, including:
               "xorg-server-" version ".tar.bz2"))
         (sha256
          (base32
-          "1vk6j7hmigfill9x8m7a6vvgb3s50ji2yf6yprbgqfz9xf9x83zy"))
+          "17dc3g8cc55nbkx3np64dsz04n621dnzjmcc9wys0xbyyd1q47d8"))
         (patches
          (list
           ;; See:
@@ -5198,7 +5198,16 @@ draggable titlebars and borders.")
 (define-public xorg-server-for-tests
   (hidden-package
    (package
-     (inherit xorg-server))))
+     (inherit xorg-server)
+     (version "1.20.4")
+     (source (origin
+               (inherit (package-source xorg-server))
+               (uri (string-append
+                     "mirror://xorg/individual/xserver/"
+                     "xorg-server-" version ".tar.bz2"))
+               (sha256
+                (base32
+                 "1vk6j7hmigfill9x8m7a6vvgb3s50ji2yf6yprbgqfz9xf9x83zy")))))))
 
 (define-public xorg-server-xwayland
   (package