Upgrade rust/crates/clang-sys to 1.0.3 am: 430b0554f8 am: 64fc21b911 am: ef10236592

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/clang-sys/+/1505791

Change-Id: I0e5d76f1cc9da4971ae0577b9de093fead5d5298