Angular update

src/app/core/components/contact/contact.component.spec.ts

-import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 
 import { ContactComponent } from './contact.component';
 import { ReactiveFormsModule, AbstractControl } from '@angular/forms';
@@ -50,7 +50,7 @@ describe('ContactComponent', () => {
   let text: AbstractControl;
 
   describe('Template', () => {
-    beforeEach(async(() => {
+    beforeEach(waitForAsync(() => {
       TestBed.configureTestingModule({
         imports: [
           ReactiveFormsModule,