build: update npm dependencies

tools/gulp-tasks/validate-commit-message.js

@@ -1,3 +1,12 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+// tslint:disable:no-console
 module.exports = (gulp) => () => {
   const validateCommitMessage = require('../validate-commit-message');
   const childProcess = require('child_process');