Bump pytest from 5.4.2 to 5.4.3

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.2 to 5.4.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.4.2...5.4.3)

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

Author: dependabot-preview[bot]

poetry.lock

@@ -19,7 +19,7 @@ Flask-Migrate = "2.5.3"
 prometheus_client = "0.8.0"
 psycopg2-binary = "2.8.5"
 py-healthcheck = "1.10.1"
-pytest = "5.4.2"
+pytest = "5.4.3"
 pytest-mock = "3.1.0"
 pytest-cov = "2.8.1"
 python-dateutil = "2.8.1"