Update tox from 3.21.4 to 3.22.0

pyup-bot · pyup-bot · commit e4ef7c94880c · 2021-02-17T14:23:19.000+05:30
diff --git a/requirements-testing.txt b/requirements-testing.txt
@@ -7,7 +7,7 @@ autopep8==1.5.5
 mypy==0.790
 py-spy==0.3.3
 codecov==2.1.11
-tox==3.21.4
+tox==3.22.0
 mccabe==0.6.1
 pylint==2.6.2
 rope==0.18.0
