chore(package): update phantomjs-prebuilt to version 2.1.13
chore(package): update phantomjs-prebuilt to version 2.1.13

https://greenkeeper.io/
ger-benjamin/ngeo,adube/ngeo,camptocamp/ngeo,ger-benjamin/ngeo,Jenselme/ngeo,adube/ngeo,Jenselme/ngeo,kalbermattenm/ngeo,ger-benjamin/ngeo,Jenselme/ngeo,camptocamp/ngeo,kalbermattenm/ngeo,camptocamp/ngeo,kalbermattenm/ngeo,Jenselme/ngeo,adube/ngeo,camptocamp/ngeo,adube/ngeo,camptocamp/ngeo