chore(examples): update next dep example (#3648)

Author: FabienMotte

examples/next/package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "algoliasearch": "4.11.0",
-    "next": "12.1.5",
+    "next": "12.3.1",
     "qs": "6.8.0",
     "react": "17.0.2",
     "react-dom": "17.0.2",