fix: replace gd specific WebpEncoder with general intervention WebpEncoder

Author: ace-of-aces

src/Http/Controllers/ImageTransformerController.php

@@ -19,11 +19,11 @@
 use Illuminate\Support\Facades\RateLimiter;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Str;
-use Intervention\Image\Drivers\Gd\Encoders\WebpEncoder;
 use Intervention\Image\Encoders\AutoEncoder;
 use Intervention\Image\Encoders\GifEncoder;
 use Intervention\Image\Encoders\JpegEncoder;
 use Intervention\Image\Encoders\PngEncoder;
+use Intervention\Image\Encoders\WebpEncoder;
 use Intervention\Image\Laravel\Facades\Image;
 
 class ImageTransformerController extends \Illuminate\Routing\Controller