lurk: add update script

pkgs/by-name/lu/lurk/package.nix

@@ -4,6 +4,7 @@
   fetchFromGitHub,
   fetchpatch,
   versionCheckHook,
+  nix-update-script,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
@@ -38,6 +39,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
   ];
   versionCheckProgramArg = "--version";
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     changelog = "https://github.com/jakwai01/lurk/releases/tag/v${finalAttrs.version}";
     description = "Simple and pretty alternative to strace";