Update Yeelight Sunflower light platform to 0.0.6

[lindsaymarkward]

Description:

Use improved library for Yeelight Sunflower lights

No changes needed to docs or anything from previous PR for light platform.

Checklist:

If the code communicates with devices, web services, or third-party tools:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• Tests have been added to verify that the new code works.

[mention-bot]

@lindsaymarkward, thanks for your PR! By analyzing the history of the files in this pull request, we identified @balloob, @fabaff and @rmkraus to be potential reviewers.