Upgrade libtraceevent to libtraceevent-1.8.4 am: 4883ef8303

Original change: https://android-review.googlesource.com/c/platform/external/libtraceevent/+/3387497

Change-Id: Ia9672612e87c441a295b6c8a432f34f16bb5c55e
Signed-off-by: Automerger Merge Worker <[email protected]>