Update pytest from 3.6.4 to 3.7.2

pyup-bot · pyup-bot · commit db71a283a212 · 2018-08-19T03:41:58.000+08:00
diff --git a/requirements_dev.txt b/requirements_dev.txt
@@ -15,7 +15,7 @@ quart==0.6.5;python_version>="3.6"
 coverage==4.5.1
 flake8==3.5.0
 tox==3.2.1
-pytest==3.6.4
+pytest==3.7.2
 pytest-runner==4.2
 pytest-asyncio==0.9.0
 pytest-tornado==0.5.0
