build(deps): bump virtualenv in /.github/workflows (#383)

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.17.1 to 20.19.0.
- [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/20.17.1...20.19.0)

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

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

.github/workflows/constraints.txt

@@ -2,5 +2,5 @@ pip==23.0
 nox==2022.11.21
 nox-poetry==1.0.2
 poetry==1.3.2
-virtualenv==20.17.1
+virtualenv==20.19.0
 poetry-dynamic-versioning==0.21.3