Bump flake8-docstrings from 1.3.1 to 1.4.0
Bump flake8-docstrings from 1.3.1 to 1.4.0

Bumps [flake8-docstrings](https://gitlab.com/pycqa/flake8-docstrings) from 1.3.1 to 1.4.0.
- [Release notes](https://gitlab.com/pycqa/flake8-docstrings/tags)
- [Changelog](https://gitlab.com/pycqa/flake8-docstrings/blob/master/HISTORY.rst)
- [Commits](https://gitlab.com/pycqa/flake8-docstrings/compare/1.3.1...1.4.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
svenstaro/python-web-boilerplate,svenstaro/python-web-boilerplate