chore(deps): update dependency graphql to v15.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
graphql	15.5.3 -> 15.6.1

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Release Notes

graphql/graphql-js

v15.6.1

Compare Source

v15.6.1 (2021-10-05)

Bug Fix 🐞

• #​3275 type/introspection: add missing __Directive.args(includeDeprecated:) (@​IvanGoncharov)

Committers: 1

• Ivan Goncharov(@​IvanGoncharov)

v15.6.0

Compare Source

v15.6.0 (2021-09-20)

New Feature 🚀

• #​3267 Depreacate 'VisitorKeyMap' and backported 'ASTVisitorKeyMap' type (@​IvanGoncharov)

Committers: 1

• Ivan Goncharov(@​IvanGoncharov)

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[coveralls]

Pull Request Test Coverage Report for Build 1327191269

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 75.943%

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Totals
Change from base Build 1327187682:	0.0%
Covered Lines:	94
Relevant Lines:	103

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💛 - Coveralls