CI: update gh sponsor list

Author: Ziggy

assets/github-sponsors-release-notes.html

@@ -70,6 +70,7 @@
 <li>Peter Snelgrove</li>
 <li>Jeff Fowler</li>
 <li>Leo Razoumov</li>
+<li>Julien Debache</li>
 <li>Christian Gibson</li>
 <li>Kohei Nozaki</li>
 <li>Dylan Conway</li>