Temperature conversions breaking change

[bwduncan]

According to the 2021.9 release notes, there is a breaking change to move temperature sensors from Entity base class to SensorEntity:

https://developers.home-assistant.io/blog/2021/08/12/sensor_temperature_conversion/

This component uses Entity for temperature sensors. It might need to be changed.

[lfasci]

Thank you, I merged a contribute from https://github.com/kamaradclimber that seems to fix