xiaomi_miio: bump python-miio dependency

[rytilahti]

Breaking change

Proposed change

Bumps python-miio dependency to the new upstream version. Changelog: https://github.com/rytilahti/python-miio/releases/tag/0.5.8

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 Miio Humidifier 'depth' warning - 100+ times per 30min #55539
• This PR is related to issue:
• Link to documentation pull request:

Checklist

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[probot-home-assistant]

Hey there @syssi, @starkillerOG, @bieniu, mind taking a look at this pull request as it has been labeled with an integration (xiaomi_miio) you are listed as a code owner for? Thanks!
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[bieniu]

LGTM 👍

[rytilahti]

The milestone should be 2021.9.1, right?

[bieniu]

Yes

[MartinHjelmare]

Please add a link to a changelog or GitHub commit compare view for the version bump in the PR description. Thanks!

[rytilahti]

Good catch @MartinHjelmare! I left a placeholder and forgot to update it, but it's now there.