Live Activity app not producing proper APS payload (events instead of event, missing dismissal-date)

[kurtguenther]

Since 5.2.3, node-apn has been producing slightly wrong APS payloads, renaming events instead of event in the live activity push notifications.

Additionally, there wasn't any support for dismissal-date which is used when the event type is end.

cc: @dplewis

[parse-github-assistant]

Thanks for opening this issue!

[cbaker6]

@mtrezza this can be closed as it was addressed in #148 and #152