fix(deps): update dependency fumadocs-mdx to v11.8.3

Author: renovate[bot]

package.json

@@ -26,7 +26,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "fumadocs-core": "15.6.12",
-    "fumadocs-mdx": "11.8.1",
+    "fumadocs-mdx": "11.8.3",
     "fumadocs-ui": "15.6.12",
     "jsdom": "^26.1.0",
     "lucide-react": "^0.542.0",