Updated rollup dependency (#295)

Updated rollup
Removed rollup-plugin-babel
Installed @rollup/plugin-babel

gulpfile.js

@@ -24,7 +24,7 @@ const dynamicCollections = require('metalsmith-dynamic-collections')
 const discoverHelpers = require('metalsmith-discover-helpers')
 const rollup = require('gulp-better-rollup')
 const sitemap = require('gulp-sitemap')
-const babel = require('rollup-plugin-babel')
+const babel = require('@rollup/plugin-babel')
 const eslint = require('gulp-eslint-new')
 const gulpStylelint = require('gulp-stylelint')
 const replace = require('gulp-replace')
@@ -225,7 +225,7 @@ function compileJS() {
     .pipe(
       rollup(
         {
-          plugins: [babel()],
+          plugins: [babel({ babelHelpers: 'bundled' })],
         },
         {
           name: 'NSW',

package.json

@@ -45,6 +45,7 @@
   "devDependencies": {
     "@babel/core": "^7.21.4",
     "@babel/preset-env": "^7.21.4",
+    "@rollup/plugin-babel": "^6.0.3",
     "auto-changelog": "^2.4.0",
     "autoprefixer": "^9.7.5",
     "browser-sync": "^2.29.1",
@@ -86,14 +87,18 @@
     "metalsmith-register-helpers": "^0.4.1",
     "postcss-normalize": "^10.0.1",
     "redrun": "^10.0.2",
-    "rollup": "^1.32.1",
-    "rollup-plugin-babel": "^4.4.0",
+    "rollup": "^3.20.6",
     "sass": "^1.62.0",
     "stylelint": "^13.2.1",
     "stylelint-config-sass-guidelines": "^7.0.0",
     "stylelint-declaration-use-variable": "^1.7.3",
     "stylelint-order": "^4.0.0",
     "stylelint-scss": "^3.16.0",
     "yargs": "^15.3.1"
+  },
+  "overrides": {
+    "gulp-better-rollup": {
+      "rollup": "^1||^2||^3"
+    }
   }
 }