Temperature sensors not inheriting SensorEntity warning in HA 2022.4

[iridris]

Describe the bug
Starting with HA 2022.4 release, log entries are listed on HA startup stating that a couple of the temperature sensors are not inheriting SensorEntity, which will be unsupported starting in HA 2022.7.

To Reproduce
Steps to reproduce the behavior:

1. Update to HA 2022.4
2. View logs
3. See the warning message about the temperature sensors.

Expected behavior
No warnings.

Screenshots

Server:

• OS: HA OS
• HA: core 2022.4.b6
• docker?: no

Additional context
Logs:

Temperature sensor sensor.prusa_mini_temp_nozzle (<class 'custom_components.prusa_connect.sensor.PrusaSensor'>) does not inherit SensorEntity, this will be unsupported in Home Assistant Core 2022.7.Please report it to the custom component author.
Temperature sensor sensor.prusa_mini_temp_bed (<class 'custom_components.prusa_connect.sensor.PrusaSensor'>) does not inherit SensorEntity, this will be unsupported in Home Assistant Core 2022.7.Please report it to the custom component author.

[sq3tle]

Thanks for letting me know! I'll fix it when I have some free time...

[iridris]

I think this might be because the various temperature sensors are not declaring the "device class" property as being "temperature". But I'm not a developer, and don't know that for sure.

I think this would probably be set up in class PrusaSensor(Entity):, but again, I'm not a developer so I'm grasping at straws.