4f: Enable the node module

Enable the node module within the test.

This returns as 0 articles are returned, but 3 are expected in the
assertion.

web/modules/custom/my_module/tests/src/Kernel/ArticleRepositoryTest.php

@@ -8,6 +8,7 @@ use Drupal\my_module\Repository\ArticleRepository;
 class ArticleRepositoryTest extends EntityKernelTestBase {
 
   public static $modules = [
+    'node',
     'my_module',
   ];