[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

Tests/test_imageops.py

@@ -605,6 +605,7 @@ def test_autocontrast_preserve_one_color(color: tuple[int, int, int]) -> None:
     )  # single color 10 cutoff
     assert_image_equal(img, out)
 
+
 def test_dither_primary_returns_image():
     im = Image.new("RGB", (4, 4), (128, 128, 128))
     out = ImageOps.dither_primary(im)