How to schedule a workflow for branch pattern?

I want to schedule my “nightly_tests” workflow for branch pattern like release/*, but that doesn’t seem to work - it wants me to specify exact branch like release/4.0.0.

I thought maybe trigger_map in combination with push_branch would do the trick, as it seems to support patterns, but it doesn’t seem to have any schedule settings (like the way Jenkins has for git triggers).

So how can I schedule a build on a branch pattern?