Migrate to cargo_embargo. am: 7a09400d62 am: 5b623a5a3a

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_xorshift/+/2832652

Change-Id: Ib2eabfb05c4f3ca45dbbd522501d7821875cb55c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>