Ensure grunt migrations can be run on any historic course

[oliverfoster]

Subject of the issue

Currently grunt migration:capture can only be executed on courses with the grunt/tasks/migration.js file.

Original issue adaptlearning/adapt-migrations#43 (comment)

[github-actions]

🎉 This issue has been resolved in version 5.46.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀