Update dependency next to v14.2.15 [SECURITY]

Author: renovate[bot]

docs/site/package.json

@@ -15,7 +15,7 @@
     "@mdx-js/react": "^3.0.1",
     "@next/mdx": "^14.1.4",
     "@types/mdx": "^2.0.12",
-    "next": "14.1.4",
+    "next": "14.2.15",
     "react": "^18",
     "react-dom": "^18",
     "react-icons": "^5.0.1",