Remove roadrunner specific session handling (#62)

* Fix removing of session cookie after logout

* Remove roadrunner specific session handling

* Simplify also the Runner

* Remove session reset

* Fix php-cs

* Increased required versions

* Fix tests

Author: alexander-schranz

composer.json

@@ -17,8 +17,8 @@
         "symfony/runtime": "^5.3 || ^6.0"
     },
     "require-dev": {
-        "symfony/http-foundation": "^4.4 || ^5.2 || ^6.0",
-        "symfony/http-kernel": "^4.4 || ^5.2 || ^6.0",
+        "symfony/http-foundation": "^5.3 || ^6.0",
+        "symfony/http-kernel": "^5.4 || ^6.0",
         "symfony/phpunit-bridge": "^5.3"
     },
     "autoload": {