Update src/ImageSharp/Image.cs

Co-authored-by: Brian Popow <38701097+brianpopow@users.noreply.github.com>

src/ImageSharp/Image.cs

@@ -185,7 +185,7 @@ namespace SixLabors.ImageSharp
             public Task VisitAsync<TPixel>(Image<TPixel> image)
                 where TPixel : unmanaged, IPixel<TPixel>
             {
-                return this.encoder.EncodeAsync(image, this.stream);
+                return this.encoder.EncodeAsync(image, this.stream).ConfigureAwait(false);
             }
         }
     }