Add TinyMCE NVD reference

Author: cookesan

advisories/github-reviewed/2021/01/GHSA-w7jx-j77m-wp65/GHSA-w7jx-j77m-wp65.json

@@ -73,6 +73,10 @@
       "type": "WEB",
       "url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65"
     },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21911"
+    },
     {
       "type": "WEB",
       "url": "https://www.npmjs.com/package/tinymce"
@@ -91,4 +95,4 @@
     "github_reviewed_at": "2021-01-06T19:27:46Z",
     "nvd_published_at": null
   }
-}
+}