[BLE] Callback leads to memory decrease correction (#740)

and library update

main/ZgatewayBT.ino

@@ -480,7 +480,8 @@ void BLEscan() {
   Log.notice(F("Scan begin" CR));
   BLEDevice::init("");
   BLEScan* pBLEScan = BLEDevice::getScan(); //create new scan
-  pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
+  MyAdvertisedDeviceCallbacks myCallbacks;
+  pBLEScan->setAdvertisedDeviceCallbacks(&myCallbacks);
   pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
   BLEScanResults foundDevices = pBLEScan->start(Scan_duration / 1000, false);
   scanCount++;

platformio.ini

@@ -73,7 +73,7 @@ arduinolog = https://github.com/1technophile/Arduino-Log.git#d13cd80
 pubsubclient = PubSubClient@2.8
 rc-switch = https://github.com/1technophile/rc-switch.git#385a7e0
 newremoteswitch = https://github.com/1technophile/NewRemoteSwitch.git#8eb980e
-ble = https://github.com/h2zero/NimBLE-Arduino.git#e53bbf9
+ble = https://github.com/h2zero/NimBLE-Arduino.git#1.0.0
 irremoteesp = IRremoteESP8266@2.7.7
 irremote = https://github.com/z3t0/Arduino-IRremote.git#1c08a37
 lora = https://github.com/sandeepmistry/arduino-LoRa.git#f4a1d27