fix: setAccessible for >= 8.6

Author: ALameLlama

test/Github/Tests/Api/TestCase.php

@@ -42,7 +42,9 @@ protected function getApiMock()
     protected function getMethod($object, $methodName)
     {
         $method = new ReflectionMethod($object, $methodName);
-        $method->setAccessible(true);
+        if (version_compare(PHP_VERSION, '8.5.0', '<')) {
+            $method->setAccessible(true);
+        }
 
         return $method;
     }