Bump pytest-randomly from 3.0.0 to 3.1.0 (#142)

Bumps [pytest-randomly](https://github.com/pytest-dev/pytest-randomly) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/pytest-dev/pytest-randomly/releases)
- [Changelog](https://github.com/pytest-dev/pytest-randomly/blob/master/HISTORY.rst)
- [Commits](pytest-dev/pytest-randomly@3.0.0...3.1.0)

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

Author: dependabot-preview[bot]

poetry.lock

@@ -56,7 +56,7 @@ safety = "^1.8"
 
 pytest = "^5.1"
 pytest-cov = "^2.7"
-pytest-randomly = "^3.0"
+pytest-randomly = "^3.1"
 pytest-asyncio = "^0.10.0"
 pytest-mypy-plugins = "^1.0"