Build(deps): Bump graphql from 15.1.0 to 15.2.0 (#8669)
Bumps [graphql](https://github.com/graphql/graphql-js) from 15.1.0 to 15.2.0.
- [Release notes](https://github.com/graphql/graphql-js/releases)
- [Commits](https://github.com/graphql/graphql-js/compare/v15.1.0...v15.2.0)
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