URL-encode the CopySource argument

Author: stevenrombauts

src/AsyncAwsS3/AsyncAwsS3Adapter.php

@@ -357,7 +357,7 @@ public function copy(string $source, string $destination, Config $config): void
             'ACL' => $this->visibility->visibilityToAcl($visibility ?: 'private'),
             'Bucket' => $this->bucket,
             'Key' => $this->prefixer->prefixPath($destination),
-            'CopySource' => $this->bucket . '/' . $this->prefixer->prefixPath($source),
+            'CopySource' => rawurlencode($this->bucket . '/' . $this->prefixer->prefixPath($source)),
         ];
 
         try {