Merge pull request #701 from staticdev/dependabot/pip/dot-github/workflows/virtualenv-20.28.0

Bump virtualenv from 20.25.1 to 20.28.0 in /.github/workflows

Author: staticdev

.github/workflows/constraints.txt

@@ -1,2 +1,2 @@
 pip==24.0
-virtualenv==20.25.1
+virtualenv==20.28.0