chore: allow phpunit 11

Additionally, `->getMockForAbstractClass()` has been deprecated and therefore substituted.

Author: brotkrueml

composer.json

@@ -34,7 +34,7 @@
         "infection/infection": "^0.29.6",
         "phpstan/extension-installer": "^1.4",
         "phpstan/phpstan": "1.11.10",
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^10.5 || ^11.3",
         "rector/rector": "1.2.3",
         "symplify/phpstan-rules": "^13.0",
         "tomasvotruba/cognitive-complexity": "^0.2.3"

tests/Unit/Client/ClientDecoratorTest.php

@@ -27,10 +27,7 @@ class ClientDecoratorTest extends TestCase
     protected function setUp(): void
     {
         $this->client = $this->createMock(ClientInterface::class);
-        $this->subject = $this->getMockForAbstractClass(
-            ClientDecorator::class,
-            [$this->client],
-        );
+        $this->subject = new class($this->client) extends ClientDecorator {};
     }
 
     #[Test]