[c3] Bump Next.js version to 16.2.3 (#1197)

Author: vicb

create-cloudflare/next/package.json

@@ -13,8 +13,8 @@
 		"cf-typegen": "wrangler types --env-interface CloudflareEnv ./cloudflare-env.d.ts"
 	},
 	"dependencies": {
-		"@opennextjs/cloudflare": "^1.17.1",
-		"next": "16.1.5",
+		"@opennextjs/cloudflare": "^1.19.1",
+		"next": "16.2.3",
 		"react": "19.1.5",
 		"react-dom": "19.1.5"
 	},