Upgrade rust/crates/libfuzzer-sys to 0.4.2 am: 577945a102 am: 6d1535b6bc am: 456a892a9b am: f641a20343

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libfuzzer-sys/+/1742518

Change-Id: Iff06697ae4a6e7f43f628648486cefd10fb09df9