Bump pyyaml from 5.4.1 to 6.0

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.4.1 to 6.0.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](https://github.com/yaml/pyyaml/compare/5.4.1...6.0

)

---
updated-dependencies:
- dependency-name: pyyaml
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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