Add enqueue.sendParent to enqueueActions

[CodingDive]

Thank you for all the work on the newest XState. ❤️ I use it every day and the developer experience is unmatched!

I often see myself wanting to use enqueue.sendParent, but it's missing from the enqueueActions

xstate/packages/core/src/actions/enqueueActions.ts

Line 69 in 9841fab

sendTo: <TTargetActor extends AnyActorRef>(

My alternative right now would be to do `enqueue.sendTo(self._parent...) or defining an extra event in the machine that I then raise to communicate with the parent.

[davidkpiano]

Thanks for the suggestion! Made a quick PR here: #4981

[CodingDive]

Thank you for the new release! ❤️