Fix type hint in trim_and_resize_if_required function

Author: u-haru

library/train_util.py

@@ -2391,7 +2391,7 @@ def load_image(image_path, alpha=False):
 
 # 画像を読み込む。戻り値はnumpy.ndarray,(original width, original height),(crop left, crop top, crop right, crop bottom)
 def trim_and_resize_if_required(
-    random_crop: bool, image: Image.Image, reso, resized_size: Tuple[int, int]
+    random_crop: bool, image: np.ndarray, reso, resized_size: Tuple[int, int]
 ) -> Tuple[np.ndarray, Tuple[int, int], Tuple[int, int, int, int]]:
     image_height, image_width = image.shape[0:2]
     original_size = (image_width, image_height)  # size before resize