Update pytest from 3.8.1 to 6.1.1 (#24)

pyup-bot · web-flow · commit bf88cc598bfe · 2020-10-19T00:02:46.000-07:00
diff --git a/requirements_dev.txt b/requirements_dev.txt
@@ -8,6 +8,6 @@ coverage==5.3
 Sphinx==3.2.1
 twine==3.2.0
 
-pytest==3.8.1
+pytest==6.1.1
 pytest-aiohttp==0.3.0
 pytest-runner==4.2
