Migrate to cargo_embargo. am: 76354bffe6

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/oorandom/+/2822778

Change-Id: I43b07a5e33ea5c16bad4ac8a5a4ed1a6e839147d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>