adjusting the thickness of x-axis and y-axis

[rezarahman12]

Dear Kevin (@kevinblighe)
Thank you for developing Enhanced volcano plot package. I would like to ask for a favor on this. I want to thin the x-axis and y-axis lines. Could you please tell me how to change the axis line thickness in the volcano plot generated with the Enhanced volcano package? I've added my figure with this post. I want to decrease the axis line only/
Kind regards
Reza