Replace NimBLE2902 with createDescriptor for CCCD

src/ble_midi_transport.cpp

@@ -74,7 +74,7 @@ bool BleMidiTransport::begin() {
         Serial.println("[BLE] FAILED to create characteristic");
         return false;
     }
-    ble_char->addDescriptor(new NimBLE2902());
+    ble_char->createDescriptor(BLEUUID((uint16_t)0x2902), NIMBLE_PROPERTY::READ | NIMBLE_PROPERTY::WRITE);
     ble_char->setCallbacks(new CharCallbacks());
 
     ble_service->start();