Add missing SPDX header and bump node version for linter.

Author: cpyle0819

.github/workflows/lint-javascript.yml

@@ -26,7 +26,7 @@ jobs:
         if: steps.changed-files.outputs.any_changed == 'true'
         uses: actions/setup-node@v3
         with:
-          node-version: "20.x"
+          node-version: "22.x"
       - name: Install dependencies
         if: steps.changed-files.outputs.any_changed == 'true'
         run: npm i --prefix javascriptv3

javascriptv3/example_code/cross-services/textract-react/src/Config.js

@@ -1,3 +1,6 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
 export const Config = {
   StackName: "textract-react",
   DefaultImageName: "default_document_3.png",