upgrade to angular v19

src/app/app.component.ts

@@ -6,9 +6,10 @@ import { TimezoneService } from './timezone/services/timezone.service';
 
 declare let gtag: Function;
 @Component({
-  selector: 'app-root',
-  templateUrl: './app.component.html',
-  styleUrls: ['./app.component.scss'],
+    selector: 'app-root',
+    templateUrl: './app.component.html',
+    styleUrls: ['./app.component.scss'],
+    standalone: false
 })
 export class AppComponent {
   fiveOclocks: Timezone[] = [];