Migrate to cargo_embargo. am: 0adece5a03 am: 3f247dffed

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex-automata/+/2832751

Change-Id: Ie322f19f1173beadb94103523f864c317d9a9d24
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>