prevent collisions when many files have the same name

Author: kaptk2

src/Http/Controllers/UppyS3MultipartController.php

@@ -104,10 +104,9 @@ public function createMultipartUpload(Request $request)
     {
         $type = $request->input('type');
         $filenameRequest = $request->input('filename');
-        $fileName = pathinfo($filenameRequest, PATHINFO_FILENAME);
         $fileExtension = pathinfo($filenameRequest, PATHINFO_EXTENSION);
         $folder = config('uppy-s3-multipart-upload.s3.bucket.folder') ? config('uppy-s3-multipart-upload.s3.bucket.folder').'/' : '';
-        $key = $folder.Str::of($fileName.'_'.microtime())->slug('_').'.'.$fileExtension;
+	$key = $folder.Str::uuid().'.'.$fileExtension;
 
         try {
             $result = $this->client->createMultipartUpload([