Bump dbus-fast to 2.21.2

[bdraco]

Proposed change

changelog: Bluetooth-Devices/dbus-fast@v2.21.1...v2.21.2

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
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• Breaking change (fix/feature causing existing functionality to break)
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• This PR fixes or closes issue: fixes #
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[bdraco]

thanks. I need to do some more manual testing, but since I'm traveling that takes a lot longer. Hopefully will merge tomorrow