Added bug proof image to jpeg decoder test suit

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.Images.cs

@@ -20,6 +20,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                 TestImages.Jpeg.Baseline.Jpeg420Small,
                 TestImages.Jpeg.Issues.Fuzz.AccessViolationException922,
                 TestImages.Jpeg.Baseline.Jpeg444,
+                TestImages.Jpeg.Baseline.Jpeg422,
                 TestImages.Jpeg.Baseline.Bad.BadEOF,
                 TestImages.Jpeg.Baseline.MultiScanBaselineCMYK,
                 TestImages.Jpeg.Baseline.YcckSubsample1222,
@@ -100,6 +101,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                 [TestImages.Jpeg.Baseline.Bad.BadEOF] = 0.38f / 100,
                 [TestImages.Jpeg.Baseline.Bad.BadRST] = 0.0589f / 100,
 
+                [TestImages.Jpeg.Baseline.Jpeg422] = 0.0013f / 100,
                 [TestImages.Jpeg.Baseline.Testorig420] = 0.38f / 100,
                 [TestImages.Jpeg.Baseline.Jpeg420Small] = 0.287f / 100,
                 [TestImages.Jpeg.Baseline.Turtle420] = 1.0f / 100,

tests/Images/External/ReferenceOutput/JpegDecoderTests/DecodeBaselineJpeg_jpeg422.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:733cc46271c4402974db2536a55e6ecae3110856df73031ca48dad03745d852d
+size 35375