Update xunit-dotnet monorepo

This MR contains the following updates:

Package	Change	Age	Confidence
xunit	2.5.3 -> 2.9.3
xunit.runner.visualstudio	2.5.3 -> 2.8.2

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Release Notes

xunit/visualstudio.xunit (xunit.runner.visualstudio)

v2.8.2

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v2.8.1

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v2.8.0

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v2.5.8

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v2.5.7

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v2.5.6

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v2.5.5

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v2.5.4

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Configuration

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👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

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This MR has been generated by Renovate Bot.