Update dependency pydocstyle to v6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pydocstyle (changelog)	==5.1.1 -> ==6.0.0

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Release Notes

PyCQA/pydocstyle

### [`v6.0.0`](https://togithub.com/PyCQA/pydocstyle/compare/5.1.1...6.0.0) [Compare Source](https://togithub.com/PyCQA/pydocstyle/compare/5.1.1...6.0.0)

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