Bump pytest from 5.3.2 to 5.3.4

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.3.2 to 5.3.4.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.3.2...5.3.4)

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

test-requirements.txt

@@ -44,7 +44,7 @@ pytest-flake8==1.0.4
 pytest-mock==2.0.0
 pytest-mypy==0.4.2
 pytest-sugar==0.9.2
-pytest==5.3.2
+pytest==5.3.4
 pytz==2019.3              # via django
 requests==2.22.0          # via coveralls
 rfc3986==1.3.2            # via httpx