Don't verify source maps for data package build

Author: Mamaduka

Gruntfile.js

@@ -1663,6 +1663,7 @@ module.exports = function(grunt) {
 	grunt.registerTask( 'verify:source-maps', function() {
 		const ignoredFiles = [
 			'build/wp-includes/js/dist/components.js',
+			'build/wp-includes/js/dist/data.js',
 		];
 		const files = buildFiles.reduce( ( acc, path ) => {
 			// Skip excluded paths and any path that isn't a file.