Bump virtualenv

Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

etc/thirdparty/virtualenv.pyz

@@ -1,7 +1,7 @@
 about_resource: virtualenv.pyz
 name: get-virtualenv
-version: 20.13.3
-download_url: https://github.com/pypa/get-virtualenv/raw/20.13.3/public/virtualenv.pyz
+version: 20.16.5
+download_url: https://github.com/pypa/get-virtualenv/raw/20.16.5/public/virtualenv.pyz
 description: virtualenv is a tool to create isolated Python environments.
 homepage_url: https://github.com/pypa/virtualenv
 license_expression: lgpl-2.1-plus AND (bsd-new OR apache-2.0) AND mit AND python AND bsd-new
@@ -10,4 +10,4 @@ copyright: Copyright (c) The Python Software Foundation and others
 redistribute: yes
 attribute: yes
 track_changes: yes
-package_url: pkg:github/pypa/get-virtualenv@20.13.1#public/virtualenv.pyz
+package_url: pkg:github/pypa/get-virtualenv@20.16.5#public/virtualenv.pyz