Add compatibility with symfony/validator v6
requested to merge aeliot-tm/graphql-mutation-validator-bundle:add_compatibility_with_validator_v6 into master
Backward compatibility break
There is declared mixed data type of the first parameter of the method \AssoConnect\GraphQLMutationValidatorBundle\Validator\Constraints\GraphQLRequestObjectValidator::validate().
That is required by the interface \Symfony\Component\Validator\ConstraintValidatorInterface.
And this is locked to PHP ^8.0