Migrate to cargo_embargo. am: e499062798

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pin-utils/+/2828201

Change-Id: I87b5a900ee6a0ed8ae5869aa102e9b0f111c9c94
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>