fixup! fix(autoconfig): Refactor DNS query for testing

Signed-off-by: Christoph Wurst <[email protected]>

tests/Unit/Dns/ResolverTest.php

@@ -13,7 +13,8 @@
 use OCA\Mail\Dns\Resolver;
 
 class ResolverTest extends TestCase {
-	private Resolver $resolver;
+	/** @var Resolver */
+	private $resolver;
 
 	protected function setUp(): void {
 		parent::setUp();