Update dependency com.graphql-java:graphql-java to v20.7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.graphql-java:graphql-java	20.6 -> 20.7

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Release Notes

graphql-java/graphql-java (com.graphql-java:graphql-java)

### [`v20.7`](https://togithub.com/graphql-java/graphql-java/releases/tag/v20.7): 20.7 This is a small bugfix release which includes a backport of PR [#​3334](https://togithub.com/graphql-java/graphql-java/issues/3334), which fixes a type unwrapping bug. #### What's Changed - Backport PR [#​3334](https://togithub.com/graphql-java/graphql-java/issues/3334) to 20.x by [@​dondonz](https://togithub.com/dondonz) in [https://github.com/graphql-java/graphql-java/pull/3355](https://togithub.com/graphql-java/graphql-java/pull/3355) **Full Changelog**: https://github.com/graphql-java/graphql-java/compare/v20.6...v20.7

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