Bump NUnit from 4.1.0 to 4.2.0 in /src#579

dependabot[bot] merged 1 commit intomainVerifyTests/Verify.ImageSharp:mainfrom

dependabot/nuget/src/NUnit-4.2.0VerifyTests/Verify.ImageSharp:dependabot/nuget/src/NUnit-4.2.0Copy head branch name to clipboard