chore(deps): update nextra monorepo to v2.13.4

Author: renovate[bot]

packages/website/package.json

@@ -22,8 +22,8 @@
     "clsx": "2.1.0",
     "next": "14.1.1",
     "next-themes": "0.2.1",
-    "nextra": "2.13.3",
-    "nextra-theme-docs": "2.13.3",
+    "nextra": "2.13.4",
+    "nextra-theme-docs": "2.13.4",
     "postcss": "8.4.35",
     "postcss-lightningcss": "1.0.0",
     "react": "18.2.0",