perfect_dark: add `unstableGitUpdater`

pkgs/by-name/pe/perfect_dark/package.nix

···
   pkg-config,
   python3,
   zlib,
+  unstableGitUpdater,
   romID ? "ntsc-final",
 }:
 let
···
 
     runHook postInstall
   '';
+
+  passthru = {
+    updateScript = unstableGitUpdater { hardcodeZeroVersion = true; };
+  };
 
   meta = {
     description = "Modern cross-platform port of Perfect Dark";