text: Title: How to smooth 3D surface plot
  Body: I have a 3D surface plot like this:
  
  ![image](https://github.com/plotly/plotly.py/assets/144340455/567b26e0-e501-42ff-b108-ef67af0391dd)
  
  I am not sure how to smooth this plot, I searched but could not find any information.