Use with workflow_dispatch

[mverleg]

When manually running an Action, I get this error, which makes sense:

Error: This action only supports pull requests and pushes, workflow_dispatch events are not supported.

However this even happens if I add

if: github.event_name != 'workflow_dispatch'

I don't know if that's expected, but I'd very much like a way around it.

(Use case: run a workflow if particular files change, or if manually requested)

[TannerGilbert]

This action only supports pull requests or push's commits and therefore can't be triggered manually, as can be seen in the following code:

get-changed-files/src/main.ts

Lines 28 to 42 in d06c756

	switch (eventName) {
	case 'pull_request':
	base = context.payload.pull_request?.base?.sha
	head = context.payload.pull_request?.head?.sha
	break
	case 'push':
	base = context.payload.before
	head = context.payload.after
	break
	default:
	core.setFailed(
	`This action only supports pull requests and pushes, ${context.eventName} events are not supported. ` +
	"Please submit an issue on this action's GitHub repo if you believe this in correct."
	)
	}