Merge pull request #22 from sonic182/dependabot/pip/pytest-5.2.1

Bump pytest from 5.1.2 to 5.2.1

test-requirements.txt

@@ -49,7 +49,7 @@ pytest-mock==1.11.1
 pytest-mypy==0.4.1
 pytest-sugar==0.9.2
 pytest-xdist==1.30.0
-pytest==5.1.2
+pytest==5.2.1
 pytz==2019.2              # via django
 requests==2.22.0          # via coveralls
 rfc3986==1.3.2            # via httpx