Fix PNG loading issues by updating the zlib to one with fixes

tests/Tests/SKBitmapTest.cs

@@ -705,5 +705,19 @@ public void SetPixelWritesTheColor()
 
 			Assert.Equal(expectedPixels, bitmap.Pixels);
 		}
+
+		[SkippableTheory]
+		[InlineData("osm-liberty.png")]
+		[InlineData("testimage.png")]
+		public void CanDecodePotentiallyCorruptPngFiles(string filename)
+		{
+			var path = Path.Combine(PathToImages, filename);
+
+			var bytes = File.ReadAllBytes(path);
+			using var data = SKData.CreateCopy(bytes);
+			using var bitmap = SKBitmap.Decode(data);
+
+			Assert.NotNull(bitmap);
+		}
 	}
 }

tests/Tests/SKImageTest.cs

@@ -942,5 +942,19 @@ protected override bool OnUseEncodedData(IntPtr data, IntPtr length)
 				return false;
 			}
 		}
+
+		[SkippableTheory]
+		[InlineData("osm-liberty.png", 30, 240, 0xFF725A50)]
+		[InlineData("testimage.png", 1040, 340, 0xFF0059FF)]
+		public void CanDecodePotentiallyCorruptPngFiles(string filename, int x, int y, uint color)
+		{
+			var path = Path.Combine(PathToImages, filename);
+
+			using var image = SKImage.FromEncodedData(path);
+			using var actualImage = image.ToRasterImage(true);
+			using var pixmap = actualImage.PeekPixels();
+
+			Assert.Equal((SKColor)color, pixmap.GetPixelColor(x, y));
+		}
 	}
 }