CI: update gh sponsor list

Author: Ziggy

assets/github-sponsors-homepage.html

@@ -15,5 +15,4 @@
 <li>Will Manning</li>
 <li>Spiral</li>
 <li>Alok Parlikar</li>
-<li>Numan</li>
 <li>Mase Graye</li>

assets/github-sponsors-release-notes.html

@@ -24,7 +24,6 @@
 <li><a href="http://www.parlikar.com" rel="nofollow noopener" target="_blank" class="external-link">Alok Parlikar</a></li>
 <li><a href="https://huly.io" rel="nofollow noopener" target="_blank" class="external-link">Huly® Platform™</a></li>
 <li><a href="https://stefan-hagen.website" rel="nofollow noopener" target="_blank" class="external-link">Stefan Hagen</a></li>
-<li><a href="https://twitter.com/gazumps" rel="nofollow noopener" target="_blank" class="external-link">Numan</a></li>
 <li><a href="https://www.masongraye.com/" rel="nofollow noopener" target="_blank" class="external-link">Mase Graye</a></li>
 <li>Reuben Dunnington</li>
 <li>Isaac Yonemoto</li>