chore(deps): update nextjs monorepo to v16.2.9

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
     "@mui/lab": "9.0.0-beta.3",
     "@mui/material": "9.0.1",
     "@mui/material-nextjs": "9.0.1",
-    "@next/mdx": "16.2.6",
+    "@next/mdx": "16.2.9",
     "@rjsf/core": "6.5.3",
     "@rjsf/mui": "6.5.3",
     "@rjsf/utils": "6.5.3",
@@ -87,7 +87,7 @@
     "lodash-es": "4.18.1",
     "material-ui-popup-state": "5.3.7",
     "nanoid": "5.1.11",
-    "next": "16.2.6",
+    "next": "16.2.9",
     "next-http-proxy-middleware": "1.2.8",
     "nextjs-routes": "2.2.5",
     "node-fetch": "3.3.2",