last-successful-event should support allow to pass multiple type at once

[mauriziovitale]

There might be some scenario for instance, schedule | workflow_dispatch (Cron job run manually) where the last event can be one type or another

Expected behaviour last-successful-event: schedule|workflow_dispatch 1 schedule running 2 workflow_dispatch ✅ <- would like to pick this sha 3 schedule  ✅

Current behaviour last-successful-event: schedule 1 schedule running 2 workflow_dispatch ✅
3 schedule  ✅. <- would pick this sha

[mauriziovitale]

https://github.com/nrwl/nx-set-shas/pull/143

@meeroslav I have created a PR if you are interested to that