Update tools/update-lib-configs.js

Co-authored-by: Flo Edelmann <[email protected]>

Author: ota-meshi

Diff for: tools/update-lib-configs.js

@@ -58,7 +58,7 @@ function formatCategory(category) {
 module.exports = {
   parser: require.resolve('vue-eslint-parser'),
   parserOptions: {
-    ecmaVersion: "latest",
+    ecmaVersion: 'latest',
     sourceType: 'module'
   },
   env: {