Bump SixLabors.ImageSharp from 1.0.3 to 2.1.8 in /src/Mazes.Render#24

dependabot[bot] wants to merge 1 commit intonextaPixelInSpace/F-a-maze-ing:nextfrom

dependabot/nuget/src/Mazes.Render/SixLabors.ImageSharp-2.1.8aPixelInSpace/F-a-maze-ing:dependabot/nuget/src/Mazes.Render/SixLabors.ImageSharp-2.1.8Copy head branch name to clipboard