Update CDN Hosts

List/domainset/cdn.conf

@@ -1079,6 +1079,8 @@ static.snapchat.com
 # CodePen
 assets.codepen.io
 cpwebassets.codepen.io
+# xkcd
+imgs.xkcd.com
 # EpicGames
 cdn1.epicgames.com
 cdn2.epicgames.com
@@ -1283,3 +1285,4 @@ images.scalero.io
 .chasecdn.com
 static.snaptube.in
 s1.kwai.net
+cdn.hackernoon.com