Update tox from 3.22.0 to 3.23.0 (#510)

pyup-bot · web-flow · commit 2931045a9b9b · 2021-03-03T19:14:42.000+05:30
diff --git a/requirements-testing.txt b/requirements-testing.txt
@@ -7,7 +7,7 @@ autopep8==1.5.5
 mypy==0.812
 py-spy==0.3.3
 codecov==2.1.11
-tox==3.22.0
+tox==3.23.0
 mccabe==0.6.1
 pylint==2.7.2
 rope==0.18.0
