build(deps-dev): bump types-pyyaml from 5.4.6 to 5.4.8

Bumps [types-pyyaml](https://github.com/python/typeshed) from 5.4.6 to 5.4.8.
- [Release notes](https://github.com/python/typeshed/releases)
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: types-pyyaml
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

setup.py

@@ -78,7 +78,7 @@ setuptools.setup(
             # type stubs for mypy
             "types-backports==0.1.3",
             "types-colorama==0.4.3",
-            "types-PyYAML==5.4.6",
+            "types-PyYAML==5.4.8",
             "types-tabulate==0.8.2",
             "types-termcolor==1.1.1",
             "types-psutil==5.8.0",