Update mstest monorepo to 3.8.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
MSTest.TestAdapter	3.7.3 -> 3.8.3
MSTest.TestFramework	3.7.3 -> 3.8.3

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Release Notes

microsoft/testfx (MSTest.TestAdapter)

v3.8.3

See the release notes here

v3.8.2

See the release notes here

v3.8.1

See the release notes here

v3.8.0

See the release notes here

Announcements

• This release adds new Assert APIs related to throwing exceptions, collections, and strings. Refer to the changelog for more information.
• This release adds support for generic test methods.
• This release adds few new analyzers.
• We added MSTestAnalysisMode. We encourage you to set this property to at least Recommended.
• This release adds RetryAttribute
• Microsoft.Testing.Extensions.TrxReport and Microsoft.Testing.Extensions.CodeCoverage are now a dependency of MSTest metapackage

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Configuration

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