feat: update Angular dependencies and improve test configurations

src/app/auth/otp/otp.component.spec.ts

@@ -1,4 +1,6 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { provideHttpClientTesting } from '@angular/common/http/testing';
+import { provideRouter } from '@angular/router';
 
 import { OtpComponent } from './otp.component';
 
@@ -8,7 +10,8 @@ describe('OtpComponent', () => {
 
   beforeEach(async () => {
     await TestBed.configureTestingModule({
-      imports: [OtpComponent]
+      imports: [OtpComponent],
+      providers: [provideRouter([]), provideHttpClientTesting()]
     })
     .compileComponents();