Update Android.bp by running cargo_embargo am: 3fa43adc78

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/utf-8/+/3208484

Change-Id: Ia594b3da08ac89244e4ba1d9773aea990e22755a
Signed-off-by: Automerger Merge Worker <[email protected]>