[rector] Rector fixes

Author: actions-user

src/Configuration/Extractor.php

@@ -24,9 +24,7 @@ public function getConfigTreeBuilder(): \Symfony\Component\Config\Definition\Bui
         $builder->getRootNode()
             ->validate()
             ->ifArray()
-            ->then(function (array $item) {
-                return ExtractorConfigurationValidator::validate($item);
-            })
+            ->then(fn(array $item) => ExtractorConfigurationValidator::validate($item))
             ->end()
             ->children()
                 ->scalarNode('api_type')

src/Configuration/Loader.php

@@ -18,9 +18,7 @@ public function getConfigTreeBuilder(): \Symfony\Component\Config\Definition\Bui
         $builder->getRootNode()
             ->validate()
             ->ifArray()
-                ->then(function (array $item) {
-                    return LoaderConfigurationValidator::validate($item);
-                })
+                ->then(fn(array $item) => LoaderConfigurationValidator::validate($item))
             ->end()
             ->children()
                 ->scalarNode('api_type')