update stealth server for .co, as per Jacco Tunnissen

Author: gbxyz

bin/stealth.pl

@@ -46,7 +46,7 @@
     "bh" => "https://rdap.centralnic.com/bh/",
     "bz" => "https://rdap.identitydigital.services/rdap/",
     "ch" => "https://rdap.nic.ch/",
-    "co" => "https://rdap.nic.co/",
+    "co" => "https://rdap.registry.co/co/",
     "de" => "https://rdap.denic.de/",
     "dm" => "https://rdap.dmdomains.dm/rdap/",
     "ga" => "https://rdap.nic.ga/",