bump marked from 5.1.1 to 15.0.6

---
updated-dependencies:
- dependency-name: marked
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -36,6 +36,6 @@
   "dependencies": {
     "@nextcloud/router": "^2.2.1",
     "brace": "^0.11.1",
-    "marked": "^5.1.1"
+    "marked": "^15.0.6"
   }
 }