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

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

tests/Unit/Service/Autoconfig/IspDbTest.php

@@ -46,7 +46,7 @@ class IspDbTest extends TestCase {
 	private $client;
 
 	/** @var MockObject|Resolver */
-	private MockObject|Resolver $dnsResolver;
+	private $dnsResolver;
 
 	/** @var LoggerInterface|MockObject */
 	private $logger;