update app.py to use GPU zero

app.py

@@ -1,6 +1,7 @@
 import torch
 
 import gradio as gr
+import spaces
 import yt_dlp as youtube_dl
 from transformers import pipeline
 from transformers.pipelines.audio_utils import ffmpeg_read
@@ -22,7 +23,7 @@ pipe = pipeline(
     device=device,
 )
 
-
+@spaces.GPU
 def transcribe(inputs, task):
     if inputs is None:
         raise gr.Error("No audio file submitted! Please upload or record an audio file before submitting your request.")