Update WiFiSTA.h

Author: fryefryefrye

libraries/WiFi/src/WiFiSTA.h

@@ -85,6 +85,7 @@ class WiFiSTAClass
 
     bool enableIpV6();
     IPv6Address localIPv6();
+    IPv6Address globalIPv6();
 
     // STA WiFi info
     static wl_status_t status();