Update Android.bp by running cargo_embargo am: 646e970552

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/threadpool/+/3095964

Change-Id: I5e800dccf21df63a62fdb9e5de45070c593c4040
Signed-off-by: Automerger Merge Worker <[email protected]>