chore(package.json): bump up dev dependencies (#2518)
chore(package.json): bump up dev dependencies (#2518)


jayphelps/rxjs,trxcllnt/RxJS,Brocco/RxJS,benlesh/RxJS,trxcllnt/RxJS,RxJS-CN/RxJS-Docs-CN,trxcllnt/RxJS,ReactiveX/RxJS,jayphelps/rxjs,martinsik/rxjs,ReactiveX/RxJS,ReactiveX/rxjs,benlesh/RxJS,RxJS-CN/RxJS-Docs-CN,ReactiveX/RxJS,SangKa/RxJS-Docs-CN,ReactiveX/rxjs,kwonoj/RxJS,martinsik/rxjs,Brocco/RxJS,SangKa/RxJS-Docs-CN,IgorMinar/RxJS,benlesh/RxJS,ReactiveX/rxjs,trxcllnt/RxJS,ReactiveX/RxJS,martinsik/rxjs,kwonoj/RxJS,ReactiveX/rxjs,kwonoj/RxJS,kwonoj/RxJS,martinsik/rxjs,IgorMinar/RxJS,jayphelps/rxjs,Brocco/RxJS,SangKa/RxJS-Docs-CN,RxJS-CN/RxJS-Docs-CN,SangKa/RxJS-Docs-CN,jayphelps/rxjs,Brocco/RxJS,jayphelps/rxjs,RxJS-CN/RxJS-Docs-CN,benlesh/RxJS