Update app.py

app.py

@@ -1,6 +1,6 @@
 import os
 os.system("pip install gradio==2.7.5.2")
-os.system("python -m pip install paddlepaddle-gpu==2.2.2 -i http://mirror.baidu.com/pypi/simple")
+os.system("conda install paddlepaddle-gpu==2.2.2")
 os.system("hub install wav2lip==1.0.0")
 import gradio as gr
 import paddlehub as hub