hyprlandPlugins.hypr-dynamic-cursors: add update script

pkgs/applications/window-managers/hyprwm/hyprland-plugins/hypr-dynamic-cursors.nix

@@ -3,6 +3,7 @@
   mkHyprlandPlugin,
   fetchFromGitHub,
   hyprland,
+  unstableGitUpdater,
 }:
 
 mkHyprlandPlugin hyprland {
@@ -27,6 +28,8 @@ mkHyprlandPlugin hyprland {
     runHook postInstall
   '';
 
+  passthru.updateScript = unstableGitUpdater { };
+
   meta = {
     description = "Plugin to make your Hyprland cursor more realistic";
     homepage = "https://github.com/VirtCode/hypr-dynamic-cursors";