chore(deps): bump virtualenv from 21.7.1 to 21.7.3 (#15427)

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 21.7.1 to 21.7.3.
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@21.7.1...21.7.3)

---
updated-dependencies:
- dependency-name: virtualenv
  dependency-version: 21.7.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

ci-constraints-requirements.txt

@@ -260,7 +260,7 @@ urllib3==2.7.0 ; python_full_version >= '3.10'
     # via requests
 uv==0.12.3
     # via nox
-virtualenv==21.7.1
+virtualenv==21.7.3
     # via nox
 zipp==3.23.1 ; python_full_version < '3.10'
     # via importlib-metadata