Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.1 to 5.4.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](https://github.com/yaml/pyyaml/compare/5.1...5.4)

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

• Commit a6938c4
• #12: build(deps): bump pyyaml from 5.1 to 5.4
• Branch master

dependabot[bot] authored GitHub committed