Bump pytest from 5.4.1 to 5.4.2

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.1 to 5.4.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.4.1...5.4.2)

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

Author: dependabot-preview[bot]

poetry.lock

@@ -15,7 +15,7 @@ click = "^7.0"
 importlib_metadata = {version = "^1.6.0", python = "<3.8"}
 
 [tool.poetry.dev-dependencies]
-pytest = "^5.3.5"
+pytest = "^5.4.2"
 coverage = {extras = ["toml"], version = "^5.0.3"}
 pytest-cov = "^2.8.1"
 black = "^19.10b0"