Update openweave submodule to 3e840adeca47ab519d9336730ee4466de316e368
Update openweave submodule to 3e840adeca47ab519d9336730ee4466de316e368

openweave/openweave-nrf52840-lock-example,openweave/openweave-nrf52840-lock-example,openweave/openweave-nrf52840-lock-example