Enable flake8-pyi's Y037 (#9686)

stubs/Pillow/PIL/Image.pyi

@@ -2,7 +2,7 @@ from _typeshed import Incomplete, Self, SupportsRead, SupportsWrite
 from collections.abc import Callable, Iterable, Iterator, MutableMapping, Sequence
 from enum import IntEnum
 from pathlib import Path
-from typing import Any, ClassVar, Protocol, SupportsBytes, Union
+from typing import Any, ClassVar, Protocol, SupportsBytes
 from typing_extensions import Literal, TypeAlias
 
 from PIL.PyAccess import PyAccess
@@ -22,13 +22,13 @@ _Resample: TypeAlias = Literal[0, 1, 2, 3, 4, 5]
 _Size: TypeAlias = tuple[int, int]
 _Box: TypeAlias = tuple[int, int, int, int]
 
-_ConversionMatrix: TypeAlias = Union[
-    tuple[float, float, float, float], tuple[float, float, float, float, float, float, float, float, float, float, float, float]
-]
+_ConversionMatrix: TypeAlias = (
+    tuple[float, float, float, float] | tuple[float, float, float, float, float, float, float, float, float, float, float, float]
+)
 # `str` values are only accepted if mode="RGB" for an `Image` object
 # `float` values are only accepted for certain modes such as "F"
 # See https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.new
-_Color: TypeAlias = Union[int, tuple[int], tuple[int, int, int], tuple[int, int, int, int], str, float, tuple[float]]
+_Color: TypeAlias = int | tuple[int] | tuple[int, int, int] | tuple[int, int, int, int] | str | float | tuple[float]
 
 class _Writeable(SupportsWrite[bytes], Protocol):
     def seek(self, __offset: int) -> Any: ...

stubs/Pillow/PIL/ImageColor.pyi

@@ -1,7 +1,6 @@
-from typing import Union
 from typing_extensions import TypeAlias
 
-_RGB: TypeAlias = Union[tuple[int, int, int], tuple[int, int, int, int]]
+_RGB: TypeAlias = tuple[int, int, int] | tuple[int, int, int, int]
 _Ink: TypeAlias = str | int | _RGB
 _GreyScale: TypeAlias = tuple[int, int]
 

stubs/Pillow/PIL/ImageOps.pyi

@@ -1,12 +1,12 @@
 from _typeshed import Incomplete
 from collections.abc import Iterable
-from typing import Protocol, Union
+from typing import Protocol
 from typing_extensions import TypeAlias
 
 from .Image import Image, Resampling, _Resample, _Size
 from .ImageColor import _Ink
 
-_Border: TypeAlias = Union[int, tuple[int, int], tuple[int, int, int, int]]
+_Border: TypeAlias = int | tuple[int, int] | tuple[int, int, int, int]
 
 class _Deformer(Protocol):
     def getmesh(self, image: Image): ...

stubs/Pillow/PIL/TiffTags.pyi

@@ -1,5 +1,5 @@
 from _typeshed import Incomplete
-from typing import Any, NamedTuple, Union
+from typing import Any, NamedTuple
 from typing_extensions import Literal, TypeAlias
 
 class _TagInfo(NamedTuple):
@@ -37,7 +37,7 @@ DOUBLE: Literal[12]
 IFD: Literal[13]
 
 _TagType: TypeAlias = Literal[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
-_TagTuple: TypeAlias = Union[tuple[str, _TagType, int], tuple[str, _TagInfo, int, dict[str, int]]]
+_TagTuple: TypeAlias = tuple[str, _TagType, int] | tuple[str, _TagInfo, int, dict[str, int]]
 
 TAGS_V2: dict[int, _TagTuple]
 TAGS_V2_GROUPS: dict[int, dict[int, _TagTuple]]