Bumps [pyyaml](https://github.com/yaml/pyyaml) from 3.11 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/3.11...5.4) Signed-off-by: dependabot[bot] <support@github.com>