fix(deps): update dependency fumadocs-mdx to v15

Author: renovate[bot]

package.json

@@ -60,7 +60,7 @@
     "clsx": "^2.1.1",
     "drizzle-orm": "^0.45.2",
     "fumadocs-core": "^16.7.11",
-    "fumadocs-mdx": "^14.2.11",
+    "fumadocs-mdx": "^15.0.0",
     "fumadocs-openapi": "10.8.6",
     "fumadocs-ui": "npm:@fumadocs/base-ui@16.8.12",
     "geist": "^1.7.0",