deps(nuget): Bump Microsoft.NET.Test.Sdk from 18.4.0 to 18.6.0#31

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mainSignalCoding/signal-sentinel-scanner:mainfrom

dependabot/nuget/tests/SignalSentinel.Scanner.Tests/Microsoft.NET.Test.Sdk-18.6.0SignalCoding/signal-sentinel-scanner:dependabot/nuget/tests/SignalSentinel.Scanner.Tests/Microsoft.NET.Test.Sdk-18.6.0Copy head branch name to clipboard