Bump pep8-naming from 0.7.0 to 0.8.0 in /{{cookiecutter.app_name}}

Bumps [pep8-naming](https://github.com/PyCQA/pep8-naming) from 0.7.0 to 0.8.0.
- [Release notes](https://github.com/PyCQA/pep8-naming/releases)
- [Changelog](https://github.com/PyCQA/pep8-naming/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/PyCQA/pep8-naming/compare/0.7.0...0.8.0

)

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