Fix SnackbarService import path in test file

Co-authored-by: PhantomDave <34485699+PhantomDave@users.noreply.github.com>

Author: Copilot

frontend/src/app/components/dashboards/dashboard-component/dashboard-component.component.spec.ts

@@ -1,7 +1,7 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { DashboardComponent } from './dashboard-component.component';
 import { WidgetType } from '../../../../generated/graphql';
-import { SnackbarService } from '../../../services/snackbar-service';
+import { SnackbarService } from '../../../shared/services/snackbar.service';
 
 describe('DashboardComponent', () => {
   let component: DashboardComponent;