shopsys Update to symfony 5

Q A

Description, reason for the PR ...

New feature Yes/No

BC breaks Yes/No

Fixes issues ...

Have you read and signed our License Agreement for contributions? Yes/No

Q	A
Description, reason for the PR	...
New feature	Yes/No
BC breaks	Yes/No
Fixes issues	...
Have you read and signed our License Agreement for contributions?	Yes/No

Todo:

[ ] php phing translations-dump throw The "--dir" option does not exist. error
[ ] User Deprecated: Since symfony/security-http 5.1: The "Symfony\Component\Security\Http\Logout\LogoutSuccessHandlerInterface" interface is deprecated, create a listener for the "Symfony\Component\Security\Http\Event\LogoutEvent" event instead.
[ ] cache warmup raise warnings like Failed to generate ConfigBuilder for extension Craue\FormFlowBundle\DependencyInjection\CraueFormFlowExtension.