Symfony 7 / PHP 8.3 compatibility

[Vincz]

Q	A
Bug fix?	yes/no
New feature?	yes/no
BC breaks?	yes/no
Deprecations?	yes/no
Tests pass?	yes/no
Documented?	yes/no
Fixed tickets	#...
License	MIT

[mcg-web]

Thank you @Vincz ! Some cleanup and this can be merge !

[Vincz]

@mcg-web Thank boss! Fixed & merged :) Shall we publish a new version?

[jerowork]

@mcg-web Could you create a new release, including these changes? :) Thanks!

[victormacko]

Thanks so much @Vincz & @mcg-web for all your hard work in getting this working on Symfony 7 -- it's such a great package!!
Any ideas if you're planning a new release soon? Just waiting on this package before being able to make the upgrade. Thank you in advance :)

[luckyraul]

@Vincz graphiql also please

[victormacko]

Thanks so much @Vincz - can I check if v1 is still 'dev', or is that production-ready now? (the index page shows it as being still in dev :/ ... Thank you so much for the release!