Migrate to cargo_embargo. am: 5c8770fe84

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/lru-cache/+/2821937

Change-Id: I4b3e3348b20f5bc63293b0e2a4414c2dd95eaa16
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>