Update app.py

app.py

@@ -1,5 +1,8 @@
 import os
  
+os.system("pip uninstall -y gradio")
+os.system("pip install gradio==3.43.1")
+
 os.system('wget "https://public-vigen-video.oss-cn-shanghai.aliyuncs.com/robin/models/RetinaFace-R50.pth" -O weights/RetinaFace-R50.pth')
 os.system('wget "https://public-vigen-video.oss-cn-shanghai.aliyuncs.com/robin/models/GPEN-BFR-512.pth" -O weights/GPEN-512.pth')
 os.system('wget "https://public-vigen-video.oss-cn-shanghai.aliyuncs.com/robin/models/GPEN-Colorization-1024.pth" -O weights/GPEN-1024-Color.pth ')