Chore: Upgraded to Angular v18

overlord/src/app/role/role.service.spec.ts

@@ -1,4 +1,4 @@
-import { HttpClientModule } from '@angular/common/http';
+import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http';
 import { inject, TestBed } from '@angular/core/testing';
 
 import { RoleService } from './role.service';
@@ -6,8 +6,8 @@ import { RoleService } from './role.service';
 describe('RoleService', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
-      imports: [HttpClientModule],
-      providers: [RoleService],
+      imports: [],
+      providers: [RoleService, provideHttpClient(withInterceptorsFromDi())],
     });
   });