Bump pytest-cov from 2.8.1 to 2.9.0 (#117)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.8.1 to 2.9.0.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v2.8.1...v2.9.0)

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

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

pyproject.toml

@@ -41,7 +41,7 @@ dump-env = "dump_env.cli:main"
 python = "^3.6"
 
 [tool.poetry.dev-dependencies]
-pytest-cov = "^2.8"
+pytest-cov = "^2.9"
 pytest-randomly = "^3.3"
 pytest = "^5.4"
 "delegator.py" = "^0.1.1"