chore(deps): bump async-graphql-axum from 4.0.16 to 6.0.7

Bumps [async-graphql-axum](https://github.com/async-graphql/async-graphql) from 4.0.16 to 6.0.7.
- [Release notes](https://github.com/async-graphql/async-graphql/releases)
- [Changelog](https://github.com/async-graphql/async-graphql/blob/master/CHANGELOG.md)
- [Commits](https://github.com/async-graphql/async-graphql/commits)

---
updated-dependencies:
- dependency-name: async-graphql-axum
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]