Upgrade rust/crates/libfuzzer-sys to 0.4.0 am: d1325ea499 am: 4bc707d895 am: d2f6565466 am: 20420b1957

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

Change-Id: I90561a3f786d53203acb32fea73c256fcb96558c