chore(deps): update vstest monorepo

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Microsoft.NET.Test.Sdk	17.8.0 -> 17.9.0
Microsoft.NET.Test.Sdk	15.0.0-preview-20161024-02 -> 15.9.2

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Release Notes

microsoft/vstest (Microsoft.NET.Test.Sdk)

v17.9.0

What's Changed

• Remove dependency on Nuget.Frameworks by @​nohwnd in https://github.com/microsoft/vstest/pull/4693
• Add platform guard by @​dotMorten in https://github.com/microsoft/vstest/pull/4737
• Remove javascript in HtmlLogger by @​daveMueller in https://github.com/microsoft/vstest/pull/4744
• Fix CPU is consumed by polling frequently when there is no subscriber by @​nohwnd in https://github.com/microsoft/vstest/pull/4735
• Create a proper MSBuild ToolTask based VSTestTask by @​mcartoixa in https://github.com/microsoft/vstest/pull/2702
• Update SDK, copy logger by @​nohwnd in https://github.com/microsoft/vstest/pull/4755
• Fix staircase in logger by @​nohwnd in https://github.com/microsoft/vstest/pull/4756
• Update dump client to latest by @​nohwnd in https://github.com/microsoft/vstest/pull/4724
• [rel/17.9] Disable testhost prestart by @​nohwnd in https://github.com/microsoft/vstest/pull/4836

New Contributors

• @​jithu7432 made their first contribution in https://github.com/microsoft/vstest/pull/4698
• @​mcartoixa made their first contribution in https://github.com/microsoft/vstest/pull/2702

Full Changelog: microsoft/vstest@v17.8.0...v17.9.0

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