Update to node20

- updates many dependencies
- removes @nuxtjs/tailwindcss and postcss8
- pkg targets are using node18 until node20 targets are available

client/nuxt.config.js

@@ -39,6 +39,7 @@ module.exports = {
 
   // Global CSS: https://go.nuxtjs.dev/config-css
   css: [
+    '@/assets/tailwind.css',
     '@/assets/app.css'
   ],
 
@@ -58,9 +59,7 @@ module.exports = {
   // Modules for dev and build (recommended): https://go.nuxtjs.dev/config-modules
   buildModules: [
     // https://go.nuxtjs.dev/tailwindcss
-    '@nuxtjs/tailwindcss',
-    '@nuxtjs/pwa',
-    '@nuxt/postcss8'
+    '@nuxtjs/pwa'
   ],
 
   // Modules: https://go.nuxtjs.dev/config-modules