coverage>=4.5.3,<4.6
docutils>=0.15,<0.16
flake8>=3.7,<3.8
pytest>=3.6,<5.3
pytest-cov>=2.7.1,<2.8
isort>=4.3.20,<4.4

coverage>=4.5.3,<4.6
docutils>=0.15,<0.16
flake8>=3.7,<3.8
pytest>=3.6,<5.3
pytest-cov>=2.7.1,<2.9
isort>=4.3.20,<4.4

Update pytest-cov requirement from <2.8,>=2.7.1 to >=2.7.1,<2.9
Update pytest-cov requirement from <2.8,>=2.7.1 to >=2.7.1,<2.9

Updates the requirements on [pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-cov/compare/v2.7.1...v2.8.0)

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