Update Angular and Material to v19

Front/skydivelogs-app/src/app/list-of-dzs/list-of-dzs.component.ts

@@ -12,9 +12,10 @@ import { AuthenticationService } from '../../services/authentication.service';
 import { NewDropZoneComponent } from '../new-drop-zone/new-drop-zone.component';
 
 @Component({
-  selector: 'app-list-of-dzs',
-  templateUrl: './list-of-dzs.component.html',
-  styleUrls: ['./list-of-dzs.component.css'],
+    selector: 'app-list-of-dzs',
+    templateUrl: './list-of-dzs.component.html',
+    styleUrls: ['./list-of-dzs.component.css'],
+    standalone: false
 })
 export class ListOfDzsComponent implements OnInit {
   public displayedColumns: Array<string> = [