Migrate to cargo_embargo. am: d9f0633011

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/der-oid-macro/+/2822113

Change-Id: I8dbbc7f43113004d2e88a12e7d8a4dc7bed0b924
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>