[WIP] Migrate smallrye-graphql from jsonb to jackson

[jmartisk]

Quarkus part of smallrye/smallrye-graphql#2543

[quarkus-bot]

Thanks for your pull request!

Your pull request does not follow our editorial rules. Could you have a look?

• title should preferably start with an uppercase character (if it makes sense!)

_{This message is automatically generated by a bot.}