⬆️ Bump twine from 3.0.0 to 3.1.0 (#35)

Bumps [twine](https://github.com/pypa/twine) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/pypa/twine/releases)
- [Changelog](https://github.com/pypa/twine/blob/master/docs/changelog.rst)
- [Commits](pypa/twine@3.0.0...3.1.0)

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

Co-authored-by: null <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements_dev.txt

@@ -4,6 +4,6 @@ blacken-docs==1.3.0
 pip==19.3.1
 pre-commit==1.20.0
 Sphinx==2.2.1
-twine==3.0.0
+twine==3.1.0
 wheel==0.33.6
 yamllint==1.19.0