fix: import in supertest for e2e tests

Author: ibousfiha

test/app.e2e-spec.ts

@@ -1,6 +1,6 @@
 import { INestApplication } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
-import * as request from 'supertest';
+import request from 'supertest';
 import { App } from 'supertest/types';
 import { AppModule } from './../src/app.module';