Dropped node < 14.0

Signed-off-by: Ismo Vuorinen <ismo.vuorinen@geniem.com>

package.json

@@ -9,6 +9,9 @@
     "dev": "npx mix build",
     "prod": "npx mix build -p"
   },
+  "engines": {
+    "node": ">=14"
+  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/ivuorinen/generic-landing-page.git"
@@ -23,6 +26,7 @@
     "autoprefixer": "10.4.2",
     "browser-sync": "2.27.7",
     "browser-sync-webpack-plugin": "2.3.0",
+    "engine.io": "^6.1.2",
     "laravel-mix": "6.0.41",
     "mix-tailwindcss": "1.3.0",
     "postcss": "8.4.6",