syncyomi: add passthru.updateScript

pkgs/by-name/sy/syncyomi/package.nix

@@ -8,6 +8,7 @@
   fetchPnpmDeps,
   pnpmConfigHook,
   esbuild,
+  nix-update-script,
 }:
 let
   lockedEsbuild = esbuild.overrideAttrs (
@@ -88,6 +89,8 @@ buildGoModule (finalAttrs: {
     mv $out/bin/SyncYomi $out/bin/syncyomi
   '';
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     description = "Open-source project to synchronize Tachiyomi manga reading progress and library across multiple devices";
     homepage = "https://github.com/SyncYomi/SyncYomi";