Update app.py

The specifications for the Zero GPU space have changed and it will no longer work unless you do this.
I don't know the details either, but that seems to be the case anyway.

app.py

@@ -1,9 +1,9 @@
+import spaces
 import gradio as gr
 import torch
 from diffusers import StableDiffusionXLPipeline, EulerDiscreteScheduler
 from huggingface_hub import hf_hub_download
 from safetensors.torch import load_file
-import spaces
 from PIL import Image
 
 SAFETY_CHECKER = True