Move cross-env to dev dependencies since we can run prod without it

package.json

@@ -9,8 +9,7 @@
     "isbot": "4",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "react-icons": "^5.3.0",
-    "cross-env": "^7.0.3"
+    "react-icons": "^5.3.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.16.0",
@@ -30,15 +29,16 @@
     "tailwindcss": "^3.4.15",
     "typescript": "^5.7.2",
     "typescript-eslint": "^8.16.0",
-    "vite": "^6.0.1"
+    "vite": "^6.0.1",
+    "cross-env": "^7.0.3"
   },
   "resolutions": {
     "globals": "14.0.0"
   },
   "scripts": {
     "dev": "cross-env NODE_ENV=development remix vite:dev",
     "build": "cross-env NODE_ENV=production remix vite:build",
-    "serve": "cross-env NODE_ENV=production remix-serve build/server/index.js",
+    "serve": "remix-serve build/server/index.js",
     "lint": "eslint"
   }
 }