Migrate to cargo_embargo. am: ade89fb953 am: b2934dc178 am: 4a5094341f

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/sec1/+/2832812

Change-Id: Ic5d814d0e3bffecced83b51affc2c3454e3373d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>