fix missing header

Author: andrewyuq

packages/amazonq/test/unit/codewhispererChat/controllers/chat/chatRequest/converter.test.ts

@@ -1,3 +1,8 @@
+/*!
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import assert from 'assert'
 import {
     ChatTriggerType,