⬇️ Downgrade NextJS and React

Middleware didn't work in v12.2.3. Hopefully the password protection will work again now.

next.config.js

@@ -6,5 +6,8 @@ const withBundleAnalyzer = require('@next/bundle-analyzer')({
 
 module.exports = withBundleAnalyzer({
   reactStrictMode: false,
+  experimental: {
+    outputStandalone: true,
+  },
   output: 'standalone',
 });