chore: added serverMiddleware config to vercel.json

Author: technikhil314

vercel.json

@@ -3,7 +3,11 @@
     {
       "src": "nuxt.config.js",
       "use": "@nuxtjs/vercel-builder",
-      "config": {}
+      "config": {
+        "serverFiles": [
+          "serverMiddleware/**"
+        ]
+      }
     }
   ]
 }