update BLE library for ESP32 env compatibility

with the last version of ESP32 arduino env it is not possible to compile on ESP32, we get "missing gatt_api.h" ERROR. So as to avoid that we need to use the last version of the nkolban library for BLE 0.4.16

lib/ESP32_BLE_Arduino/library.properties

@@ -1,5 +1,5 @@
 name=ESP32 BLE Arduino
-version=0.4.8
+version=0.4.16
 author=Neil Kolban <kolban1@kolban.com>
 maintainer=Neil Kolban <kolban1@kolban.com>
 sentence=BLE functions for ESP32