Remove unused animations package

We don't use the animations package whatsoever, and it's officially
recommended by the Angular project to migrate away from it to native CSS
animations. See https://angular.dev/guide/animations/migration.

Removing reference to animations also shaves off 63.46 kB in our initial
bundle size, so that's a bonus.

Author: lberrymage

src/app/app.config.ts

@@ -4,7 +4,6 @@
 
 import { provideHttpClient, withInterceptors } from '@angular/common/http';
 import { ApplicationConfig, importProvidersFrom } from '@angular/core';
-import { provideAnimations } from '@angular/platform-browser/animations';
 
 import { AppRoutingModule } from './app-routing.module';
 import { unauthorizedInterceptor } from './unauthorized.interceptor';
@@ -13,7 +12,6 @@ import { withCredentialsInterceptor } from './with-credentials.interceptor';
 export const appConfig: ApplicationConfig = {
     providers: [
         importProvidersFrom(AppRoutingModule),
-        provideAnimations(),
         provideHttpClient(withInterceptors([unauthorizedInterceptor, withCredentialsInterceptor])),
     ],
 };