chore: Update pyproject.toml (#336)

* Update to match pytest-ansible: ansible/pytest-ansible@b3d71f5

* chore: auto fixes from pre-commit.com hooks

* chore: auto fixes from pre-commit.com hooks

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

pyproject.toml

@@ -74,6 +74,7 @@ arg-type-hints-in-docstring = false
 baseline = ".config/pydoclint-baseline.txt"
 check-return-types = false
 exclude = '\.git|\.tox|build|out|venv'
+should-document-private-class-attributes = true
 show-filenames-in-every-violation-message = true
 skip-checking-short-docstrings = false
 style = "google"