Bump the workflows-dependencies group (#153)

Bumps the workflows-dependencies group in /.github/workflows with 2 updates: [nox](https://github.com/wntrblm/nox) and [virtualenv](https://github.com/pypa/virtualenv).


Updates `nox` from 2024.3.2 to 2024.4.15
- [Release notes](https://github.com/wntrblm/nox/releases)
- [Changelog](https://github.com/wntrblm/nox/blob/main/CHANGELOG.md)
- [Commits](wntrblm/nox@2024.03.02...2024.04.15)

Updates `virtualenv` from 20.25.1 to 20.25.3
- [Release notes](https://github.com/pypa/virtualenv/releases)
- [Changelog](https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst)
- [Commits](pypa/virtualenv@20.25.1...20.25.3)

---
updated-dependencies:
- dependency-name: nox
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: workflows-dependencies
- dependency-name: virtualenv
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: workflows-dependencies
...

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

.github/workflows/constraints.txt

@@ -1,5 +1,5 @@
 pip==24.0
-nox==2024.3.2
+nox==2024.4.15
 nox-poetry==1.0.3
 poetry==1.8.2
-virtualenv==20.25.1
+virtualenv==20.25.3