gnome: rename from gnome3

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

pkgs/applications/science/electronics/kicad/default.nix

@@ -1,6 +1,6 @@
 { lib, stdenv
 , fetchFromGitLab
-, gnome3
+, gnome
 , dconf
 , wxGTK30
 , wxGTK31
@@ -187,7 +187,7 @@ stdenv.mkDerivation rec {
   makeWrapperArgs = with passthru.libraries; [
     "--prefix XDG_DATA_DIRS : ${base}/share"
     "--prefix XDG_DATA_DIRS : ${hicolor-icon-theme}/share"
-    "--prefix XDG_DATA_DIRS : ${gnome3.adwaita-icon-theme}/share"
+    "--prefix XDG_DATA_DIRS : ${gnome.adwaita-icon-theme}/share"
     "--prefix XDG_DATA_DIRS : ${wxGTK.gtk}/share/gsettings-schemas/${wxGTK.gtk.name}"
     "--prefix XDG_DATA_DIRS : ${gsettings-desktop-schemas}/share/gsettings-schemas/${gsettings-desktop-schemas.name}"
     # wrapGAppsHook did these two as well, no idea if it matters...