Merge pull request #7655 from docker/dependabot/pip/tox-3.19.0

Bump tox from 3.18.1 to 3.19.0

requirements-indirect.txt

@@ -23,6 +23,6 @@ pyrsistent==0.16.0
 smmap==3.0.4
 smmap2==3.0.1
 toml==0.10.1
-tox==3.18.1
+tox==3.19.0
 virtualenv==20.0.29
 wcwidth==0.2.5