Bump packaging from 20.1 to 20.3

dependabot-preview[bot] · web-flow · commit ff355949257c · 2020-03-06T07:43:18.000Z
Bumps [packaging](https://github.com/pypa/packaging) from 20.1 to 20.3. - [Release notes](https://github.com/pypa/packaging/releases) - [Changelog](https://github.com/pypa/packaging/blob/master/CHANGELOG.rst) - [Commits](pypa/packaging@20.1...20.3) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
diff --git a/requirements-test.txt b/requirements-test.txt
@@ -23,7 +23,7 @@ functools32==3.2.3.post2 ; python_version < '3'
 importlib-metadata==1.5.0
 importlib-resources==1.0.2
 mccabe==0.6.1
-packaging==20.1
+packaging==20.3
 pathlib2==2.3.5
 pluggy==0.13.1
 py==1.8.1
