migration symfony 5 4 (#300)

* symfony 5.4 (diff dev)

* symfony 5.4 (working)

* symfony 5.4 (update autoload)

* symfony 5.4 (remove swiftmailer mailer implementation)

* symfony 5.4 (php doc and split Global accessor class)


### Impacted packages:

composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies

composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies

lib/symfony/http-kernel/Fragment/FragmentRendererInterface.php

@@ -25,18 +25,16 @@ interface FragmentRendererInterface
     /**
      * Renders a URI and returns the Response content.
      *
-     * @param string|ControllerReference $uri     A URI as a string or a ControllerReference instance
-     * @param Request                    $request A Request instance
-     * @param array                      $options An array of options
+     * @param string|ControllerReference $uri A URI as a string or a ControllerReference instance
      *
-     * @return Response A Response instance
+     * @return Response
      */
     public function render($uri, Request $request, array $options = []);
 
     /**
      * Gets the name of the strategy.
      *
-     * @return string The strategy name
+     * @return string
      */
     public function getName();
 }