update node from version 8 to version 12
update node from version 8 to version 12

Node 8 is no longer actively supported and will not receive any updates.

laszpio/planner,codebar/planner,codebar/planner,despo/planner,laszpio/planner,despo/planner,despo/planner,codebar/planner,despo/planner,laszpio/planner,laszpio/planner,codebar/planner