Add GraphQL ~> 1.12 to test matrix and allow to use other GraphQL version

[arathunku]

All specs pass on GraphQL 1.12, GRAPHQL_RUBY_INTERPRETER is used by default on this version.

There were also no changes to:

  if TESTING_GRAPHQL_RUBY_INTERPRETER
    extend GraphQL::Subscriptions::SubscriptionRoot
  end

because https://graphql-ruby.org/api-doc/1.11.6/GraphQL/Subscriptions/SubscriptionRoot.html Deprecated. This module is no longer needed.

[Envek]

Thank you! In general it is looking good to me. I have one small suggestion to improve test matrix, though.

[Envek]

Thank you! 🙏

[arathunku]

No, thank you, @Envek!!! I'll be able to resume work on GraphQL upgrade in the morning 😄

[arathunku]

@Envek, is there a chance for a release sometime in the future?

[Envek]

But why do you need a release for this? This PR doesn't really changes runtime behaviour of the gem.

[arathunku]

Ahhhhhhhh, nvm, I needed to include graphql-anycable in bundle update explicitly 🤦 Please ignore me, everything is looking alright!