Bump hatasmota to 0.2.13

[emontnemery]

Proposed change

Bump hatasmota from 0.2.12 to 0.2.13 and adjust handling of RGBW lights + tests

Changes:

• 0.2.12 (https://github.com/emontnemery/hatasmota/releases/tag/0.2.13)
  • Improve support for RGBW lights #92 @emontnemery
  • Bump flake8 from 3.9.1 to 3.9.2 #90 @dependabot

Git compare: https://github.com/emontnemery/hatasmota/compare/0.2.12..0.2.13

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
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Checklist

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