Bump rubocop-graphql from 1.5.6 to 1.6.0

Bumps [rubocop-graphql](https://github.com/DmitryTsepelev/rubocop-graphql) from 1.5.6 to 1.6.0.
- [Changelog](https://github.com/DmitryTsepelev/rubocop-graphql/blob/master/CHANGELOG.md)
- [Commits](DmitryTsepelev/rubocop-graphql@v1.5.6...v1.6.0)

---
updated-dependencies:
- dependency-name: rubocop-graphql
  dependency-version: 1.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -472,7 +472,7 @@ GEM
     rubocop-factory_bot (2.28.0)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    rubocop-graphql (1.5.6)
+    rubocop-graphql (1.6.0)
       lint_roller (~> 1.1)
       rubocop (>= 1.72.1, < 2)
     rubocop-performance (1.25.0)