Update to node20

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

client/tailwind.config.js

@@ -1,29 +1,18 @@
 module.exports = {
-  purge: {
-    content: [
-      'components/**/*.vue',
-      'layouts/**/*.vue',
-      'pages/**/*.vue',
-      'templates/**/*.vue',
-      'plugins/**/*.js',
-      'nuxt.config.js'
-    ],
-    safelist: [
-      'bg-success',
-      'bg-red-600',
-      'bg-yellow-400',
-      'text-green-500',
-      'py-1.5',
-      'bg-info',
-      'px-1.5',
-      'min-w-5',
-      'w-3.5',
-      'h-3.5',
-      'border-warning',
-      'mb-px',
-      'text-1.5xl'
-    ],
-  },
+  content: [
+    'components/**/*.vue',
+    'layouts/**/*.vue',
+    'pages/**/*.vue',
+    'templates/**/*.vue',
+    'plugins/**/*.js',
+    'nuxt.config.js'
+  ],
+  safelist: [
+    'bg-red-600',
+    'px-1.5',
+    'min-w-5',
+    'border-warning'
+  ],
   theme: {
     extend: {
       height: {