Adjust insteon fan speed range to valid upper bound

[bdraco]

Proposed change

We now use the same range as isy994 since setting to 256 is reported to cause a crash.

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

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# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes Fan Integration for Insteon not responding as expected after update to core 2021.3.0 #47387
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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[bdraco]

Had to step away. Will see why CI is failing later today

[bdraco]

Tested and working, but in fairness I couldn't replicate the original issue.