feat: title y artist edit

app/Http/Controllers/SongController.php

@@ -43,14 +43,29 @@ class SongController extends Controller
             'data' => $ret ? "Guardado " . $song->title : 'sin archivo'
         ]);
      }
-    /**
-     * @return void
-     * @param mixed $id
-     */
-    public function update(Request $request, $id):void
-    {
-        // Update specified song
-    }
+     /**
+      * @param int $id
+      */
+     public function update(Request $request, $id)
+     {
+         // Actualizar cancion
+         $song = Song::find($id);
+         $this->authorize("update", $song);
+
+         $validated = $request->validate([
+             'title' => 'required|string',
+             'artist' => 'required|string',
+         ]);
+
+         $song->title = $validated['title'];
+         $song->artist = $validated['artist'];
+         $song->save();
+
+         return response()->json([
+             'data' => 'Updated successfully'
+         ]);
+     }
+
     /**
      * @param int $id
      */