Migrate to cargo_embargo. am: 1cb740dd40 am: c29ea740fc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/ucd-trie/+/2828134

Change-Id: Ic0a429086298a14518e291a9573ef64d7a04000b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>