Bump virtualenv from 20.0.30 to 20.2.1
Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.0.30 to 20.2.1.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](https://github.com/pypa/virtualenv/compare/20.0.30...20.2.1)
Signed-off-by: dependabot-preview[bot] <[email protected]>