Add final Cookie hero images (#3892)

* Add final Cookie hero images

* Add Michelle

* Optimised images with calibre/image-actions

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: tunetheweb

src/config/contributors.json

@@ -3048,6 +3048,9 @@
       ],
       "2022": [
         "designers"
+      ],
+      "2024": [
+        "designers"
       ]
     }
   },