gnome: rename from gnome3

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

pkgs/applications/networking/browsers/firefox-bin/default.nix

@@ -28,7 +28,7 @@
 , libXt
 , libcanberra
 , libnotify
-, gnome3
+, gnome
 , libGLU, libGL
 , nspr
 , nss
@@ -139,7 +139,7 @@ stdenv.mkDerivation {
 
   inherit gtk3;
 
-  buildInputs = [ wrapGAppsHook gtk3 gnome3.adwaita-icon-theme ];
+  buildInputs = [ wrapGAppsHook gtk3 gnome.adwaita-icon-theme ];
 
   # "strip" after "patchelf" may break binaries.
   # See: https://github.com/NixOS/patchelf/issues/10