filebrowser: fix updateScript for ryantm builds

The package's updateScript (or ryantm's invocation of it) does not pass --subpackage frontend to nix-update. Without that flag, nix-update tries to update hashes in a single pass and hits the circular-ish dependency: goModules needs the frontend, but the frontend's pnpmDeps hash hasn't been updated yet.
With this fix, when ryantm (or anyone) triggers the update script, nix-update will know to update the frontend subpackage's hashes first, then proceed to update the main package's hashes — exactly what you do manually

Signed-off-by: Hritwik <hritwiksinghal@protonmail.com>

pkgs/by-name/fi/filebrowser/package.nix

@@ -72,7 +72,12 @@ buildGoModule {
   ];
 
   passthru = {
-    updateScript = nix-update-script { };
+    updateScript = nix-update-script {
+      extraArgs = [
+        "--subpackage"
+        "frontend"
+      ];
+    };
     inherit frontend;
     tests = {
       inherit (nixosTests) filebrowser;