feat!: symfony7 compatibility

DependencyInjection/ABELkeycloakBearerOnlyAdapterExtension.php

@@ -11,7 +11,7 @@ use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 class ABELkeycloakBearerOnlyAdapterExtension extends Extension
 {
 
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $loader->load('services.xml');

DependencyInjection/Configuration.php

@@ -10,7 +10,7 @@ use Symfony\Component\Config\Definition\ConfigurationInterface;
 class Configuration implements ConfigurationInterface
 {
 
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder("abel_keycloak_bearer_only_adapter");