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]

#143

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

[mandarini]

@mauriziovitale thank you very much for the feature request and the PR! I will try to take a look next week and see if we can merge! Thank you for your patience!