GraphQL dependency update (0.8.*)

[fstojanac]

This library needs to be updated to support new GraphQL as the resolve function's info.fieldASTs value has been renamed to info.fieldNodes (#554)

[mjurincic]

We just updated to v0.8.2 graphql and using graphql-parse-fields in our project this fix would be really appreciated.

[tjmehta]

Added support in graphql-parse-fields@1.2.0