Bump mock from 3.0.5 to 4.0.2

dependabot-preview[bot] · web-flow · commit 99bf1a230724 · 2020-03-12T07:40:10.000Z
Bumps [mock](https://github.com/testing-cabal/mock) from 3.0.5 to 4.0.2. - [Release notes](https://github.com/testing-cabal/mock/releases) - [Changelog](https://github.com/testing-cabal/mock/blob/master/CHANGELOG.rst) - [Commits](testing-cabal/mock@3.0.5...4.0.2) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
diff --git a/requirements-test.txt b/requirements-test.txt
@@ -8,7 +8,7 @@ flake8==3.7.9
 pytest==3.10.1,<4  # see https://github.com/html5lib/html5lib-python/pull/429
 coverage==5.0.3
 pytest-expect==1.1.0
-mock==3.0.5
+mock==4.0.2
 
 # and all recursive dependencies
 appdirs==1.4.3
