Update browser autopwn settings.

Author: joevennix

modules/exploits/multi/browser/firefox_tostring_console_injection.rb

@@ -14,10 +14,10 @@ class Metasploit3 < Msf::Exploit::Remote
 
   autopwn_info({
     :ua_name    => HttpClients::FF,
-    :ua_minver  => "17.0",
-    :ua_maxver  => "17.0.1",
+    :ua_minver  => "21.0",
+    :ua_maxver  => "23.0",
     :javascript => true,
-    :rank       => NormalRanking
+    :rank       => ExcellentRanking
   })
 
   def initialize(info = {})