Bump Microsoft.NET.Test.Sdk from 16.8.3 to 16.9.1#14895

TravisEz13 merged 1 commit intomasterPowerShell/PowerShell:masterfrom

dependabot/nuget/Microsoft.NET.Test.Sdk-16.9.1PowerShell/PowerShell:dependabot/nuget/Microsoft.NET.Test.Sdk-16.9.1Copy head branch name to clipboard