Update dependency virtualenv to v20.26.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
virtualenv	==20.26.3 -> ==20.26.6

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Release Notes

pypa/virtualenv (virtualenv)

### [`v20.26.6`](https://redirect.github.com/pypa/virtualenv/compare/20.26.5...20.26.6) [Compare Source](https://redirect.github.com/pypa/virtualenv/compare/20.26.5...20.26.6) ### [`v20.26.5`](https://redirect.github.com/pypa/virtualenv/compare/20.26.4...20.26.5) [Compare Source](https://redirect.github.com/pypa/virtualenv/compare/20.26.4...20.26.5) ### [`v20.26.4`](https://redirect.github.com/pypa/virtualenv/releases/tag/20.26.4) [Compare Source](https://redirect.github.com/pypa/virtualenv/compare/20.26.3...20.26.4) #### What's Changed - release 20.26.3 by [@​gaborbernat](https://redirect.github.com/gaborbernat) in [https://github.com/pypa/virtualenv/pull/2742](https://redirect.github.com/pypa/virtualenv/pull/2742) - Fix whitespace around backticks in changelog by [@​edmorley](https://redirect.github.com/edmorley) in [https://github.com/pypa/virtualenv/pull/2751](https://redirect.github.com/pypa/virtualenv/pull/2751) - Test latest Python 3.13 by [@​hugovk](https://redirect.github.com/hugovk) in [https://github.com/pypa/virtualenv/pull/2752](https://redirect.github.com/pypa/virtualenv/pull/2752) - Fix typo in Nushell activation script by [@​edmorley](https://redirect.github.com/edmorley) in [https://github.com/pypa/virtualenv/pull/2754](https://redirect.github.com/pypa/virtualenv/pull/2754) - GitHub Actions: Replace deprecated macos-12 with macos-13 by [@​hugovk](https://redirect.github.com/hugovk) in [https://github.com/pypa/virtualenv/pull/2756](https://redirect.github.com/pypa/virtualenv/pull/2756) - Fix [#​2728](https://redirect.github.com/pypa/virtualenv/issues/2728): Activating venv create unwanted console output by [@​ShootGan](https://redirect.github.com/ShootGan) in [https://github.com/pypa/virtualenv/pull/2748](https://redirect.github.com/pypa/virtualenv/pull/2748) - Upgrade bundled wheels by [@​gaborbernat](https://redirect.github.com/gaborbernat) in [https://github.com/pypa/virtualenv/pull/2760](https://redirect.github.com/pypa/virtualenv/pull/2760) #### New Contributors - [@​ShootGan](https://redirect.github.com/ShootGan) made their first contribution in [https://github.com/pypa/virtualenv/pull/2748](https://redirect.github.com/pypa/virtualenv/pull/2748) **Full Changelog**: https://github.com/pypa/virtualenv/compare/20.26.3...20.26.4

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