Bump virtualenv from 20.16.2 to 20.16.3 in /.github/workflows

[dependabot[bot]]

Bumps virtualenv from 20.16.2 to 20.16.3.

Changelog

Sourced from virtualenv's changelog.

v20.16.3 (2022-08-04)

Bugfixes - 20.16.3

- Upgrade embedded pip to ``22.2.2`` from ``22.2.1`` and setuptools to ``63.4.1`` from ``63.2.0`` - by :user:`gaborbernat`. (`[#2395](https://github.com/pypa/virtualenv/issues/2395) <https://github.com/pypa/virtualenv/issues/2395>`_)

Commits

• 2f8667a release 20.16.3
• b18f733 Bump embed pip and setuptools (#2395)
• fd064dc Bump dependencies and build tools (#2394)
• a45c7d6 Merge pull request #2392 from pypa/release-20.16.2
• See full diff in compare view

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