Fixes issue reported on the mailing list here: https://lists.archlinux.org/pipermail/aur-general/2022-March/036833.html

Thanks to Henry-Joseph Audéoud for diagnosing the issue
https://lists.archlinux.org/pipermail/aur-general/2022-March/036836.html

Also update the event variable to use the local copy instead of the
deprecated global version
https://stackoverflow.com/questions/58341832/event-is-deprecated-what-should-be-used-instead