graphql gem 2.2.0+ breaks the test suite

[brettchalupa]

Describe the bug

When bundling with graphql gem 2.2.0 or newer, the test suite fails

2.2.0's changes summary: https://github.com/rmosolgo/graphql-ruby/blob/master/CHANGELOG.md#220-18-dec-2023

To Reproduce Steps to reproduce the behavior:

1. Clone the repo
2. Bundle
3. bundle exec ruby -Itest test/graphql-docs/generator_test.rb - 3 tests fail

Expected behavior Expect the tests to pass

Additional context Add any other context about the problem here.

Downgrading to 2.1.11 passes. Diff between releases

The graphql gem does not follow SemVer, so minor releases may include breaking changes 😰 https://graphql-ruby.org/development#versioning

Ideally we figure out a way to catch this sooner and more easily.