Update ImageSequence.pyi

[ViktorSky]

Updating stubs for the PIL.ImageSequence module

This module is used to extract the frames from an Image object, but currently it gives a type error for not having annotation.
In version 10.2.0 pillow is already included with annotations for this module, but it is hidden by _typesheed

here I leave the reason for the pull

from typing import BinaryIO
from PIL import Image, ImageSequence
from io import BytesIO

def resize_gif(file: str | BinaryIO, size: tuple[int, int], mode: str | None = None) -> BytesIO:
    gif = Image.open(file)
    frames: list[Image.Image] = []
    for frame in ImageSequence.all_frames(gif):
        if mode:
            frame = frame.convert(mode)
        frames.append(frame.resize(size))
    image, *frames = frames
    result = BytesIO()
    image.save(result, save_all=True, append_images=frames, duration=gif.info["duration"], loop=gif.info["loop"])
    return result

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉

[srittau]

Thanks!