chore(package): update object-assign to version 4.1.1 (#3898)
chore(package): update object-assign to version 4.1.1 (#3898)

https://greenkeeper.io/
benkroeger/keystone,trentmillar/keystone,concoursbyappointment/keystoneRedux,dryna/keystone-twoje-urodziny,frontyard/keystone,Pop-Code/keystone,ONode/keystone,matthewstyers/keystone,danielmahon/keystone,andrewlinfoot/keystone,ratecity/keystone,matthewstyers/keystone,concoursbyappointment/keystoneRedux,dryna/keystone-twoje-urodziny,andrewlinfoot/keystone,ONode/keystone,rafmsou/keystone,vokal/keystone,Pop-Code/keystone,matthewstyers/keystone,ratecity/keystone,vokal/keystone,trentmillar/keystone,naustudio/keystone,danielmahon/keystone,rafmsou/keystone,frontyard/keystone,naustudio/keystone,vokal/keystone,trentmillar/keystone,frontyard/keystone,naustudio/keystone,danielmahon/keystone,benkroeger/keystone,andrewlinfoot/keystone,benkroeger/keystone