Bump wemake-python-styleguide from 1.5.0 to 1.6.0

Bumps [wemake-python-styleguide](https://github.com/wemake-services/wemake-python-styleguide) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/wemake-services/wemake-python-styleguide/releases)
- [Changelog](https://github.com/wemake-services/wemake-python-styleguide/blob/master/CHANGELOG.md)
- [Commits](wemake-services/wemake-python-styleguide@1.5.0...1.6.0)

---
updated-dependencies:
- dependency-name: wemake-python-styleguide
  dependency-version: 1.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]