updated pyi for array_deepcopy

Author: flexatone

src/__init__.pyi

@@ -127,7 +127,7 @@ def shape_filter(__array: np.ndarray) -> np.ndarray: ...
 def column_2d_filter(__array: np.ndarray) -> np.ndarray: ...
 def column_1d_filter(__array: np.ndarray) -> np.ndarray: ...
 def row_1d_filter(__array: np.ndarray) -> np.ndarray: ...
-def array_deepcopy(__array: np.ndarray, memo: tp.Dict[int, tp.Any]) -> np.ndarray: ...
+def array_deepcopy(__array: np.ndarray, memo: tp.Optional[tp.Dict[int, tp.Any]]) -> np.ndarray: ...
 def resolve_dtype(__d1: np.dtype, __d2: np.dtype) -> np.dtype: ...
 def resolve_dtype_iter(__dtypes: tp.Iterable[np.dtype]) -> np.dtype: ...
 def isna_element(__value: tp.Any, include_none: bool = True) -> bool: ...