Bump NUnit.Analyzers from 4.8.1 to 4.9.0#135

dependabot[bot] wants to merge 1 commit intomainCodeuctivity/ImageSharp.Compare:mainfrom

dependabot/nuget/ImageSharpCompareTestNunit/NUnit.Analyzers-4.9.0Codeuctivity/ImageSharp.Compare:dependabot/nuget/ImageSharpCompareTestNunit/NUnit.Analyzers-4.9.0Copy head branch name to clipboard