Sylius 1.13

[Prometee]

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Here is a PR aiming to fix the build and add support for Sylius 1.13. I also:

• [x] Remove support for Sylius 1.11.
• [x] Add Panther config to run Behat.
• [x] Add symfony/runtime on the test application.
• [x] Update PHPStan config.
• [x] Update Github action build.
• [x] Fix the Behat build by updating number format on scenarios.