Fix device_class - qnap drive_temp sensor

[cdce8p]

Proposed change

The device_class needs to be the forth item in the list.

core/homeassistant/components/qnap/sensor.py

Line 229 in fd66120

self._attr_device_class = variable_info[3]

Type of change

• Dependency upgrade
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[probot-home-assistant]

Hey there @colinodell, mind taking a look at this pull request as it has been labeled with an integration (qnap) you are listed as a code owner for? Thanks!
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