[sensors] sensor_facts library is not Python 3 compatible

[alexrallen]

Description
The sensor_facts ansible library treats the output of Popen.communicate() as a string but it is now a bytes array in Python 3.

See here for details: https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate

Steps to reproduce the issue:

1. Run the test_sensors test

Describe the results you received:
Test fails during collection of sensor facts from ansible with TypeError: expected bytes-like object, not str

Describe the results you expected:
Test succeeds.

Note: This failure only occurs on images where Python 3 is the default interpreter such as the bullseye builds

[alexrallen]

@saiarcot895 FYI