gnome: rename from gnome3

Since GNOME version is now 40, it no longer makes sense to use the old attribute name.

pkgs/development/libraries/clutter-gtk/default.nix

@@ -1,5 +1,5 @@
 { fetchurl, lib, stdenv, pkg-config, meson, ninja
-, gobject-introspection, clutter, gtk3, gnome3 }:
+, gobject-introspection, clutter, gtk3, gnome }:
 
 let
   pname = "clutter-gtk";
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   postBuild = "rm -rf $out/share/gtk-doc";
 
   passthru = {
-    updateScript = gnome3.updateScript {
+    updateScript = gnome.updateScript {
       packageName = pname;
       versionPolicy = "odd-unstable";
     };