fix(deps): update dependency next-mdx-remote to v6 [security]

Author: renovate[bot]

package.json

@@ -67,7 +67,7 @@
     "motion": "12.23.24",
     "next": "15.5.9",
     "next-auth": "4.24.11",
-    "next-mdx-remote": "5.0.0",
+    "next-mdx-remote": "6.0.0",
     "next-themes": "0.4.6",
     "prism-react-renderer": "1.3.5",
     "prismjs": "1.30.0",