Fix failing MatrixCalculator test

tests/ImageSharp.Tests/TestDataIcc/Conversion/IccConversionDataMatrix.cs

@@ -7,6 +7,8 @@ namespace SixLabors.ImageSharp.Tests.TestDataIcc.Conversion
 {
     public class IccConversionDataMatrix
     {
+        private static readonly Vector3 Vector3Zero = new Vector3(0.0f, 0.0f, 0.0f);
+
         public static float[,] Matrix3x3Random =
         {
             { 0.1f, 0.2f, 0.3f },
@@ -23,11 +25,11 @@ namespace SixLabors.ImageSharp.Tests.TestDataIcc.Conversion
 
         public static object[][] MatrixConversionTestData =
         {
-            new object[] { CreateMatrix(Matrix3x3Identity), Vector3.Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.5f, 0.5f, 0.5f, 0) },
+            new object[] { CreateMatrix(Matrix3x3Identity), Vector3Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.5f, 0.5f, 0.5f, 0) },
             new object[] { CreateMatrix(Matrix3x3Identity), new Vector3(0.2f, 0.2f, 0.2f), new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.7f, 0.7f, 0.7f, 0) },
-            new object[] { CreateMatrix(Matrix3x3Random), Vector3.Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.6f, 0.75f, 0.9f, 0) },
+            new object[] { CreateMatrix(Matrix3x3Random), Vector3Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.6f, 0.75f, 0.9f, 0) },
             new object[] { CreateMatrix(Matrix3x3Random), new Vector3(0.1f, 0.2f, 0.3f), new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.7f, 0.95f, 1.2f, 0) },
-            new object[] { CreateMatrix(Matrix3x3Random), Vector3.Zero, new Vector4(0.2f, 0.4f, 0.7f, 0), new Vector4(0.67f, 0.8f, 0.93f, 0) },
+            new object[] { CreateMatrix(Matrix3x3Random), Vector3Zero, new Vector4(0.2f, 0.4f, 0.7f, 0), new Vector4(0.67f, 0.8f, 0.93f, 0) },
             new object[] { CreateMatrix(Matrix3x3Random), new Vector3(0.1f, 0.2f, 0.3f), new Vector4(0.2f, 0.4f, 0.7f, 0), new Vector4(0.77f, 1, 1.23f, 0) },
         };