Migrate to cargo_embargo. am: 7a09400d62 am: 9bbdf0a8c6 am: 4206e96812

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

Change-Id: I64991e0a13b084837f95ff871209a11c8dc635a3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>