gnu: gnome-mahjongg: Update to 3.40.0.

* gnu/packages/gnome.scm (gnome-mahjongg): Update to 3.40.0.

gnu/packages/gnome.scm

@@ -12161,22 +12161,18 @@ library which detects when a file or a directory has been modified.")
     (license license:gpl2+)))
 
 (define-public gnome-mahjongg
-  ;; There hasn't been a GNOME Mahjongg release in a long time, and the last
-  ;; release doesn't build with a recent Meson, so use the latest commit.
-  (let ((commit "e9e73e5165e5968ff897e568f8eba10fc1eb207b")
-        (revision "0"))
   (package
     (name "gnome-mahjongg")
-      (version (git-version "3.38.3" revision commit))
+    (version "3.40.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://gitlab.gnome.org/GNOME/gnome-mahjongg")
-                      (commit commit)))
+                    (commit version)))
               (file-name (git-file-name name version))
               (sha256
                (base32
-                  "1cj0c076h7qfz77wpz8ypli60inj37fgw0cl9cc39b1kjfqcy3mb"))))
+                "1yj41lj2vancjzwjcm5cdv48983jq05i6sw8p4nggyqwij3xpllj"))))
     (build-system meson-build-system)
     (arguments (list #:glib-or-gtk? #t))
     (native-inputs
@@ -12198,7 +12194,7 @@ library which detects when a file or a directory has been modified.")
 tile-matching game Mahjongg.  It features multiple board layouts, tile themes,
 and a high score table.")
     (home-page "https://wiki.gnome.org/Apps/Mahjongg")
-      (license license:gpl2+))))
+    (license license:gpl2+)))
 
 (define-public gnome-themes-extra
   (package