Merge pull request #7644 from docker/dependabot/pip/tox-3.18.1

Bump tox from 2.9.1 to 3.18.1

Dockerfile

@@ -47,7 +47,7 @@ COPY --from=docker-cli /usr/local/bin/docker /usr/local/bin/docker
 WORKDIR /code/
 # FIXME(chris-crone): virtualenv 16.3.0 breaks build, force 16.2.0 until fixed
 RUN pip install virtualenv==20.0.29
-RUN pip install tox==2.9.1
+RUN pip install tox==3.18.1
 
 COPY requirements-indirect.txt .
 COPY requirements.txt .

requirements-indirect.txt

@@ -23,6 +23,6 @@ pyrsistent==0.16.0
 smmap==3.0.4
 smmap2==3.0.1
 toml==0.10.1
-tox==2.9.1
+tox==3.18.1
 virtualenv==20.0.29
 wcwidth==0.1.9