Upgrade to Eleventy 3.0.0

scripts/custom-props.js

@@ -1,6 +1,6 @@
-const fs = require('node:fs');
-const prettier = require('prettier');
-const config = require('../tailwind.config.js');
+import fs from 'node:fs';
+import prettier from 'prettier';
+import config from '../tailwind.config.js';
 
 const groupToPrefix = (group, prefix) => {
     return Object.entries(group).map(([key, value]) => {
@@ -64,4 +64,4 @@ const generateCSSProps = () => {
 };
 
 generateCSSProps();
-module.exports = generateCSSProps;
+export default generateCSSProps;