Upgrade rust/crates/libfuzzer-sys to 0.4.0 am: d1325ea499 am: 4bc707d895 am: d2f6565466

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libfuzzer-sys/+/1662761

Change-Id: Id51e18804bd04a1d53ae6d055181e0cbce3bf7dd