chore(deps): update dependency graphql to v15.5.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
graphql	15.5.1 -> 15.5.2

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Release Notes

graphql/graphql-js

### [`v15.5.2`](https://togithub.com/graphql/graphql-js/releases/v15.5.2) [Compare Source](https://togithub.com/graphql/graphql-js/compare/v15.5.1...v15.5.2) #### v15.5.2 (2021-08-30) ##### Bug Fix 🐞 - [#​3251](https://togithub.com/graphql/graphql-js/pull/3251) backport parser typescript type-definitions for 15.x.x release ([@​n1ru4l](https://togithub.com/n1ru4l)) ##### Committers: 1 - Laurin Quast([@​n1ru4l](https://togithub.com/n1ru4l))

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