Update app.py

app.py

@@ -933,7 +933,7 @@ _api_upscale = Upscale()
 # def health(_: bool = Depends(_verify_bearer_token)):
 #     return {"status": "ok"}
 @fastapi_app.get("/health")
-def health(_: bool = Depends(_verify_bearer_token)):
+async def health(_: bool = Depends(_verify_bearer_token)):
     checks = {
         "api": "ok",
         "gpu": "unknown",