Change GPIO input default pin for ESP

#528

as it is generating conflict with TRIGGER_PIN (used for reseting and erasing the flash)

main/config_GPIOInput.h

@@ -36,7 +36,7 @@ extern void GPIOInputtoMQTT();
 /*-------------------PIN DEFINITIONS----------------------*/
 #ifndef GPIOInput_PIN
   #if defined(ESP8266) || defined(ESP32)
-    #define GPIOInput_PIN 14
+    #define GPIOInput_PIN 13
   #else
     #define GPIOInput_PIN 7
   #endif