fix: protect debug endpoint with Modal proxy auth

Author: manascb1344

runner/main.py

@@ -28,6 +28,6 @@ async def webhook_endpoint(request):
 
 
 @app.function(image=runner_image)
-@modal.fastapi_endpoint(method="POST")
+@modal.fastapi_endpoint(method="POST", requires_proxy_auth=True)
 async def debug_endpoint(request):
     return await debug_runner_log(request, app)