Bump Microsoft.NET.Test.Sdk from 17.12.0 to 18.4.0#24

dependabot[bot] wants to merge 1 commit intomasterAnaRita02/dotnet-outdated:masterfrom

dependabot/nuget/test/DotNetOutdated.Tests/master/Microsoft.NET.Test.Sdk-18.4.0AnaRita02/dotnet-outdated:dependabot/nuget/test/DotNetOutdated.Tests/master/Microsoft.NET.Test.Sdk-18.4.0Copy head branch name to clipboard