Upgrade userfaultfd-sys to 0.5.0 am: f1ac6acd0b am: e8235061b2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/userfaultfd-sys/+/2878121

Change-Id: Ic5903d2c5a417f5a93c441c413d11d7248fee137
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>