Bump Microsoft.NET.Test.Sdk from 17.13.0 to 18.4.0#39

dependabot[bot] wants to merge 1 commit intomasterth3w1zard1/NCSDecomp.NET:masterfrom

dependabot/nuget/tests/KNCSDecomp.RoundTripTests/Microsoft.NET.Test.Sdk-18.4.0th3w1zard1/NCSDecomp.NET:dependabot/nuget/tests/KNCSDecomp.RoundTripTests/Microsoft.NET.Test.Sdk-18.4.0Copy head branch name to clipboard