After a year of being able to purchase cannabis legally from age 18, Quebecers will now have to wait until they turn 21. The provincial government has passed a bill changing the legal age to use marijuana, a move critics say will only drive the black market. The Coalition Avenir Quebec government adopted Bill 2, which raises the legal age for cannabis consumption from 18 to 21 as of Jan. 1, 2020. It will become…