fix(deps): update dependency nodebb-plugin-mentions to v2.13.6 (#9071)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

install/package.json

@@ -96,7 +96,7 @@
         "nodebb-plugin-emoji": "^3.3.0",
         "nodebb-plugin-emoji-android": "2.0.0",
         "nodebb-plugin-markdown": "8.12.4",
-        "nodebb-plugin-mentions": "2.13.5",
+        "nodebb-plugin-mentions": "2.13.6",
         "nodebb-plugin-soundpack-default": "1.0.0",
         "nodebb-plugin-spam-be-gone": "0.7.7",
         "nodebb-rewards-essentials": "0.1.4",