Use Pillow==9.5.0

I'm seeing the following error in the log:
```
Traceback (most recent call last):
File "/usr/local/lib/python3.10/site-packages/gradio/queueing.py", line 536, in process_events
response = await route_utils.call_process_api(
File "/usr/local/lib/python3.10/site-packages/gradio/route_utils.py", line 285, in call_process_api
output = await app.get_blocks().process_api(
File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 1923, in process_api
result = await self.call_function(
File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 1508, in call_function
prediction = await anyio.to_thread.run_sync( # type: ignore
File "/usr/local/lib/python3.10/site-packages/anyio/to_thread.py", line 56, in run_sync
return await get_async_backend().run_sync_in_worker_thread(
File "/usr/local/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 2177, in run_sync_in_worker_thread
return await future
File "/usr/local/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 859, in run
result = context.run(func, *args)
File "/usr/local/lib/python3.10/site-packages/gradio/utils.py", line 818, in wrapper
response = f(*args, **kwargs)
File "/usr/local/lib/python3.10/site-packages/gradio/utils.py", line 818, in wrapper
response = f(*args, **kwargs)
File "/home/user/app/app.py", line 231, in generate
gif_path = convert_to_gif(video_path)
File "/home/user/app/app.py", line 131, in convert_to_gif
clip = clip.resize(height=240)
File "/usr/local/lib/python3.10/site-packages/moviepy/video/fx/resize.py", line 152, in resize
newclip = clip.fl_image(fl)
File "/usr/local/lib/python3.10/site-packages/moviepy/video/VideoClip.py", line 490, in fl_image
return self.fl(lambda gf, t: image_func(gf(t)), apply_to)
File "/usr/local/lib/python3.10/site-packages/moviepy/Clip.py", line 136, in fl
newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
File "<decorator-gen-61>", line 2, in set_make_frame
File "/usr/local/lib/python3.10/site-packages/moviepy/decorators.py", line 14, in outplace
f(newclip, *a, **k)
File "/usr/local/lib/python3.10/site-packages/moviepy/video/VideoClip.py", line 644, in set_make_frame
self.size = self.get_frame(0).shape[:2][::-1]
File "<decorator-gen-11>", line 2, in get_frame
File "/usr/local/lib/python3.10/site-packages/moviepy/decorators.py", line 89, in wrapper
return f(*new_a, **new_kw)
File "/usr/local/lib/python3.10/site-packages/moviepy/Clip.py", line 93, in get_frame
return self.make_frame(t)
File "/usr/local/lib/python3.10/site-packages/moviepy/Clip.py", line 136, in <lambda>
newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
File "/usr/local/lib/python3.10/site-packages/moviepy/video/VideoClip.py", line 490, in <lambda>
return self.fl(lambda gf, t: image_func(gf(t)), apply_to)
File "/usr/local/lib/python3.10/site-packages/moviepy/video/fx/resize.py", line 150, in <lambda>
fl = lambda pic: resizer(pic.astype('uint8'), newsize)
File "/usr/local/lib/python3.10/site-packages/moviepy/video/fx/resize.py", line 37, in resizer
resized_pil = pilim.resize(newsize[::-1], Image.ANTIALIAS)
AttributeError: module 'PIL.Image' has no attribute 'ANTIALIAS'
```

I think this is because `moviepy` depends on `Pillow<10`, but the latest `Pillow` seems to be installed in this Space. Specifying `Pillow` version fixes this error.

requirements.txt

@@ -7,4 +7,5 @@ spaces==0.29.2
 moviepy==1.0.3
 openai==1.38.0
 accelerate==0.33.0
-sentencepiece==0.2.0
+sentencepiece==0.2.0
+Pillow==9.5.0