add optional deps to try to fix vercel deployment

Author: dario-piotrowicz

apps/site/package.json

@@ -96,5 +96,9 @@
     "@opennextjs/cloudflare": "^1.0.0-beta.3",
     "wrangler": "^4.13.0",
     "@flarelabs-net/wrangler-build-time-fs-assets-polyfilling": "^0.0.0"
+  },
+  "optionalDependencies": {
+    "@tailwindcss/oxide-linux-x64-gnu": "~4.1.4",
+    "lightningcss-linux-x64-gnu": "~1.29.3"
   }
 }