chore(build): lock zone.js version for the tests to start passing again
chore(build): lock zone.js version for the tests to start passing again

ppolyzos/ng-lightning,ihym/ng-lightning,ppolyzos/ng-lightning,ihym/ng-lightning,esarbanis/ng-lightning,ng-lightning/ng-lightning,ng-lightning/ng-lightning,esarbanis/ng-lightning,esarbanis/ng-lightning,ppolyzos/ng-lightning,ihym/ng-lightning