fix(deps): update dependency next to v14 [security]

Author: renovate[bot]

package.json

@@ -78,7 +78,7 @@
     "gray-matter": "^4.0.3",
     "js-cookie": "^3.0.5",
     "lucide-react": "^0.394.0",
-    "next": "^13.1.1",
+    "next": "^14.0.0",
     "next-mdx-remote": "^4.0.3",
     "posthog-js": "^1.163.0",
     "prism-themes": "^1.9.0",