devel/py-virtualenv: Update to 21.7.14
ChangeLog:
- https://github.com/pypa/virtualenv/releases/tag/21.7.12
- https://github.com/pypa/virtualenv/releases/tag/21.7.13
- https://github.com/pypa/virtualenv/releases/tag/21.7.14
Reported by: "github-actions[bot]" <notifications@github.com>