Bump wemake-python-styleguide from 1.3.0 to 1.4.0 (#2229)

Bumps [wemake-python-styleguide](https://github.com/wemake-services/wemake-python-styleguide) from 1.3.0 to 1.4.0.
- [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@1.3.0...1.4.0)

---
updated-dependencies:
- dependency-name: wemake-python-styleguide
  dependency-version: 1.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]