update json formatter test

Author: samsonasik

spec/Handler/Formatter/JsonSpec.php

@@ -45,7 +45,7 @@
                       'body_data' => [],
                       'raw_data' => '',
                       'files_data' => [],
-                      'cookie_data' => (new Cookie([]))->getArrayCopy(),
+                      'cookie_data' => [],
                     ],
                 ],
             ];