fix: examples/todo-list/nextjs-todo-list/package.json to reduce vulne…

…rabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NEXT-8602067

examples/todo-list/nextjs-todo-list/package.json

@@ -20,7 +20,7 @@
     "@types/react-dom": "18.0.11",
     "eslint": "8.34.0",
     "eslint-config-next": "13.1.6",
-    "next": "13.1.6",
+    "next": "13.5.8",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "typescript": "4.9.5"