MQE-3267: trim invalid utf-8 characters from response

Author: jilu1

src/Magento/FunctionalTestingFramework/Module/Util/ModuleUtils.php

@@ -1,4 +1,8 @@
 <?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
 
 namespace Magento\FunctionalTestingFramework\Module\Util;