fix(deps): update pyyaml requirement from 5.4.1 to 6.0

Updates the requirements on [pyyaml](https://github.com/yaml/pyyaml) to permit the latest version.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](yaml/pyyaml@5.4.1...6.0)

---
updated-dependencies:
- dependency-name: pyyaml
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Pipfile

@@ -9,7 +9,7 @@ mock = "4.0.3"
 hypothesis = "6.53.0"
 hypothesis_jsonschema = "0.22.0"
 jsonschema2md = "0.4.0"
-PyYAML = "5.4.1"
+PyYAML = "6.0"
 pre-commit = "2.20.0"
 # Please keep the following in-sync /w .pre-commit-config.yaml
 flake8 = "4.0.1"