Upgrade libraries in graphql-spqr

[ZsemlyeFiserv]

Hi guys,

your implementation of graphql help us a lot. We are using latest version, you have build here, 0.12.4.
Unfortunately, it brings a dependencies, graphql-java 21.4, which is vulnerable. Without changes for a new version of graphql,
we can't use it anymore.

Is there a way, how to help you to have a proper version update?
We tried your code and update it ourselves. Library itself is working, except a few tests. Are you open, to finish it and release a new version?

Thanks and appreciate your work.