Bump graphql-tools from 6.0.7 to 6.0.9

Bumps [graphql-tools](https://github.com/ardatan/graphql-tools) from 6.0.7 to 6.0.9.
- [Release notes](https://github.com/ardatan/graphql-tools/releases)
- [Changelog](https://github.com/ardatan/graphql-tools/blob/master/CHANGELOG.md)
- [Commits](ardatan/graphql-tools@v6.0.7...v6.0.9)

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