Migrate to cargo_embargo. am: 1e28b52033 am: 44b511d4f0

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/clap_lex/+/2826412

Change-Id: Ibb253460a88f8974bc2eb53fceaca4cfe780fa73
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>