Skip \Drupal\Tests\file\Kernel\Views\RelationshipNodeFileDataTest on PostgreSQL

(cherry picked from commit f1c28793)

core/modules/file/tests/src/Kernel/Views/RelationshipNodeFileDataTest.php

@@ -4,6 +4,7 @@
 
 namespace Drupal\Tests\file\Kernel\Views;
 
+use Drupal\Core\Database\Database;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\file\Entity\File;
 use Drupal\file\FileInterface;
@@ -39,6 +40,10 @@ class RelationshipNodeFileDataTest extends ViewsKernelTestBase {
   protected function setUp($import_test_views = TRUE): void {
     parent::setUp($import_test_views);
 
+    if (Database::getConnection()->driver() === 'pgsql') {
+      $this->markTestSkipped('Skipped because PostgreSQL is currently failing: https://www.drupal.org/project/drupal/issues/3364621');
+    }
+
     $this->installSchema('file', 'file_usage');
     $this->installEntitySchema('node');
     $this->installEntitySchema('file');