warnings with Ultrasonic sensor

[bfokin]

When running Ultrasonic.py I get the following

`python Ultrasonic.py
/usr/lib/python3/dist-packages/gpiozero/input_devices.py:852: PWMSoftwareFallback: For more accurate readings, use the pigpio pin factory.See https://gpiozero.readthedocs.io/en/stable/api_input.html#distancesensor-hc-sr04 for more info
warnings.warn(PWMSoftwareFallback(
Program is starting ...

`

I am using RPi5