Bump fakerphp/faker from 1.23.0 to 1.23.1 in /graph-tutorial

Bumps [fakerphp/faker](https://github.com/FakerPHP/Faker) from 1.23.0 to 1.23.1.
- [Release notes](https://github.com/FakerPHP/Faker/releases)
- [Changelog](https://github.com/FakerPHP/Faker/blob/v1.23.1/CHANGELOG.md)
- [Commits](FakerPHP/Faker@v1.23.0...v1.23.1)

---
updated-dependencies:
- dependency-name: fakerphp/faker
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]