Update WIFI_FIRMWARE_LATEST_VERSION to 0.6.0

Author: barvay

libraries/WiFiS3/src/WiFi.h

@@ -17,7 +17,7 @@
 #define DEFAULT_GW_AP_ADDRESS           IPAddress(192,168,1,1)
 #define DEFAULT_NM_AP_ADDRESS           IPAddress(255,255,255,0)
 
-#define WIFI_FIRMWARE_LATEST_VERSION "0.5.2"
+#define WIFI_FIRMWARE_LATEST_VERSION "0.6.0"
 
 #ifndef WIFI_MAX_SSID_COUNT
   #define WIFI_MAX_SSID_COUNT 10