chore(package): update d3 to version 4.8.0
chore(package): update d3 to version 4.8.0

https://greenkeeper.io/
adube/ngeo,Jenselme/ngeo,camptocamp/ngeo,camptocamp/ngeo,camptocamp/ngeo,adube/ngeo,adube/ngeo,Jenselme/ngeo,camptocamp/ngeo,camptocamp/ngeo,adube/ngeo,Jenselme/ngeo,Jenselme/ngeo