Update graphql specs in preparation of gem upgrade - part 2

What does this MR do and why?

This is a follow up MR that continues updating graphql specs to pass a Query::Context object rather than a hash to conform to changes made in the graphql gem.

This is the second in a series of MRs to address #473155 (closed)

Previous MR: !160256 (merged)

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #473155 (closed)