Bump Microsoft.NET.Test.Sdk from 16.9.1 to 16.9.4#15141

TravisEz13 merged 1 commit intomasterPowerShell/PowerShell:masterfrom

dependabot/nuget/Microsoft.NET.Test.Sdk-16.9.4PowerShell/PowerShell:dependabot/nuget/Microsoft.NET.Test.Sdk-16.9.4Copy head branch name to clipboard