Skilled workers
(Other definitions for pros that I've seen before include "Yes votes" , "Opposites of cons" , "Arguments in favour" , "Persons with knowledge and skill" , "Sportsmen who are paid" .)
'skilled workers' is the definition.
(artisan is a kind of skilled worker)
This is the entire clue.
(Other definitions for artisans that I've seen before include "Strain as found among craftsmen" , "Skilled craftspeople" , "Skilled manual workers or craftsmen" , "Workers skilled in a trade" .)