Update app.py

app.py

@@ -9,6 +9,7 @@ elif("T4" in gpu_info):
 
 os.system(f"git clone -b v1.5 https://github.com/camenduru/stable-diffusion-webui /home/user/app/stable-diffusion-webui")
 os.chdir("/home/user/app/stable-diffusion-webui")
+os.system(f"pip install -q torchmetrics==0.11.4")
 
 os.system(f"wget -q https://github.com/camenduru/webui/raw/main/env_patch.py -O /home/user/app/env_patch.py")
 os.system(f"sed -i '$a fastapi==0.90.0' /home/user/app/stable-diffusion-webui/requirements_versions.txt")