Update copyright header (#148)

Author: fabisev

test/handlers/isAsync.mjs

@@ -1,4 +1,7 @@
-/** Copyright 2025 Amazon.com, Inc. or its affiliates. All Rights Reserved. */
+/*
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: Apache-2.0
+*/
 
 export const handlerAsync = async () => {
   const response = {
@@ -14,4 +17,4 @@ export const handlerNotAsync = () => {
     body: JSON.stringify('Hello from Lambda!'),
   };
   return response;
-};
+};