Create a script to help create release PRs (#5339)

.eslintrc.js

@@ -22,15 +22,16 @@ module.exports = {
     {
       files: [
         "**/*.js",
+        "**/*.mjs",
       ],
       extends: [
         "eslint:recommended",
       ],
       env: {
         node: true,
+        es2022: true,
       },
       parserOptions: {
-        ecmaVersion: 2018,
         sourceType: "module",
       },
       plugins: [