aiohttp==3.5.4
flake8==3.7.7
pytest==4.5.0
pytest-asyncio==0.10.0
pytest-cov==2.7.1
pytest-runner==4.4
isort==4.3.20

aiohttp==3.5.4
flake8==3.7.7
pytest==4.5.0
pytest-asyncio==0.10.0
pytest-cov==2.7.1
pytest-runner==5.1
isort==4.3.20

Bump pytest-runner from 4.4 to 5.1
Bump pytest-runner from 4.4 to 5.1

Bumps [pytest-runner](https://github.com/pytest-dev/pytest-runner) from 4.4 to 5.1.
- [Release notes](https://github.com/pytest-dev/pytest-runner/releases)
- [Changelog](https://github.com/pytest-dev/pytest-runner/blob/master/CHANGES.rst)
- [Commits](https://github.com/pytest-dev/pytest-runner/compare/4.4...5.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>