Migrate to cargo_embargo. am: 0adece5a03 am: f34817ddbe am: 667f5bc4b1

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

Change-Id: Iae387f5d1444d8c30b9899e64c28bcec6cbabd97
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>