chore(deps-dev): 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>

dev-requirements.txt

@@ -2,7 +2,7 @@ coverage==5.1
 coveralls==1.7.0;python_version<'3.0'
 coveralls==2.0.0;python_version>='3.6'
 pytest==4.6.9;python_version<'3.0'
-pytest==5.4.1;python_version>='3.6'
+pytest==5.4.2;python_version>='3.6'
 pytest-cov==2.8.1
 click==7.1.2
 Sphinx==1.8.5;python_version<'3.0'