Bump Microsoft.NET.Test.Sdk from 17.8.0 to 18.3.0#3

dependabot[bot] wants to merge 1 commit intomasterHueMathias/Novely.Extensions.String:masterfrom

dependabot/nuget/Novely.Extensions.String.Tests/Microsoft.NET.Test.Sdk-18.3.0HueMathias/Novely.Extensions.String:dependabot/nuget/Novely.Extensions.String.Tests/Microsoft.NET.Test.Sdk-18.3.0Copy head branch name to clipboard