- removed extra test datacite accounts from .env

- updated DoiClient.ts
- removed test error via /welcome page
- npm updates

tests/functional/hello_world.spec.ts

@@ -1,7 +1,7 @@
 import { test } from '@japa/runner';
 
 test('display welcome page', async ({ client }) => {
-    const response = await client.get('/');
+    const response = await client.get('/welcome');
 
     response.assertStatus(200);
     response.assertTextIncludes('<h1 class="title"> It Works! </h1>');