temporary failing test to verify CI behavior

tests/ImageSharp.Tests/TestUtilities/Tests/TestEnvironmentTests.cs

@@ -110,5 +110,11 @@ namespace SixLabors.ImageSharp.Tests
             IImageDecoder decoder = TestEnvironment.GetReferenceDecoder(fileName);
             Assert.IsType(expectedDecoderType, decoder);
         }
+
+        [Fact]
+        public void TemporaryFailingTest()
+        {
+            Assert.True(false);
+        }
     }
 }