chore(deps): update tests to v2.5.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
xunit	nuget	patch	2.5.0 -> 2.5.1
xunit.runner.visualstudio (source)	nuget	patch	2.5.0 -> 2.5.1

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Release Notes

xunit/xunit (xunit)

### [`v2.5.1`](https://togithub.com/xunit/xunit/compare/2.5.0...2.5.1) [Compare Source](https://togithub.com/xunit/xunit/compare/2.5.0...2.5.1)

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