tailwindcss-language-server: add passthru.updateScript

pkgs/by-name/ta/tailwindcss-language-server/package.nix

@@ -5,6 +5,7 @@
   nodejs_latest,
   pnpm_9,
   cacert,
+  nix-update-script,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -65,6 +66,8 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstall
   '';
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     description = "Tailwind CSS Language Server";
     homepage = "https://github.com/tailwindlabs/tailwindcss-intellisense";