Add network support to flux_led discovery [test to see why #61132 is failing the CI]

[bdraco]

Proposed change

Add network support to flux_led discovery

The scanner is now aware of multiple network interfaces

Bump flux_led to 0.26.x as the lib now supports concurrent discovery which allows the locks to be removed.

• Changelog: lightinglibs/flux_led@0.25.18...0.26.1

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 After upgrading to 2021.11.1 - getting [flux_led.aioscanner] LEDENETDiscovery error: [WinError 10022] An invalid argument was supplied #59258
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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• Tests have been added to verify that the new code works.

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[bdraco]

#61132 seems ok now