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>

requirements.txt

@@ -34,7 +34,7 @@ pygments==2.6.1           # via sphinx
 pyparsing==2.4.6          # via packaging
 pytest-cov==2.8.1         # via -r requirements.in
 pytest-mock==3.1.0        # via -r requirements.in
-pytest==5.4.1             # via -r requirements.in, pytest-cov, pytest-mock
+pytest==5.4.2             # via -r requirements.in, pytest-cov, pytest-mock
 python-dateutil==2.7.3    # via croniter
 pytz==2019.3              # via -r requirements.in, babel
 redis==3.4.1              # via -r requirements.in