Bump SixLabors.ImageSharp from 1.0.0-beta0007 to 2.1.7 in /22-LoadModel#2

dependabot[bot] wants to merge 1 commit intomasterJorgemagic/CSharpDirectXRaytracing:masterfrom

dependabot/nuget/22-LoadModel/SixLabors.ImageSharp-2.1.7Jorgemagic/CSharpDirectXRaytracing:dependabot/nuget/22-LoadModel/SixLabors.ImageSharp-2.1.7Copy head branch name to clipboard