update eslintignore for node scripts

.eslintignore

+/app/assets/javascripts/locale/**/app.js
+/config/
 /builds/
 /coverage/
 /coverage-javascript/
 /node_modules/
 /public/
+/scripts/
 /tmp/
 /vendor/
 karma.config.js
 webpack.config.js
-svg.config.js
-/app/assets/javascripts/locale/**/app.js

scripts/frontend/frontend_script_utils.js

-/* eslint import/no-commonjs: "off" */
 const execFileSync = require('child_process').execFileSync;
 const exec = (command, args) => {

scripts/frontend/prettier.js

-/* eslint import/no-commonjs: "off", import/no-extraneous-dependencies: "off", no-console: "off" */
 const glob = require('glob');
 const prettier = require('prettier');
 const fs = require('fs');