Update Next.js (#1966)

Author: drwpow

packages/openapi-fetch/examples/nextjs/package.json

@@ -6,7 +6,7 @@
     "dev": "next dev"
   },
   "dependencies": {
-    "next": "14.2.3",
+    "next": "15.0.1",
     "openapi-fetch": "workspace:^",
     "react": "^18.3.1",
     "react-dom": "^18.3.1"