gnome: rename from gnome3

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

pkgs/development/haskell-modules/configuration-nix.nix

@@ -307,7 +307,7 @@ self: super: builtins.intersectAttrs super {
   # Tries to run GUI in tests
   leksah = dontCheck (overrideCabal super.leksah (drv: {
     executableSystemDepends = (drv.executableSystemDepends or []) ++ (with pkgs; [
-      gnome3.adwaita-icon-theme # Fix error: Icon 'window-close' not present in theme ...
+      gnome.adwaita-icon-theme # Fix error: Icon 'window-close' not present in theme ...
       wrapGAppsHook           # Fix error: GLib-GIO-ERROR **: No GSettings schemas are installed on the system
       gtk3                    # Fix error: GLib-GIO-ERROR **: Settings schema 'org.gtk.Settings.FileChooser' is not installed
     ]);

pkgs/development/haskell-modules/hackage-packages.nix

@@ -107466,7 +107466,7 @@ self: {
        platforms = [
          "aarch64-linux" "armv7l-linux" "i686-linux" "x86_64-linux"
        ];
-     }) {inherit (pkgs.gnome3) gnome-keyring; 
+     }) {inherit (pkgs.gnome) gnome-keyring; 
          inherit (pkgs) libgnome-keyring;};
 
   "gnomevfs" = callPackage