Migrate to cargo_embargo. am: 221d207ead am: ad8f361c46

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/parking_lot_core/+/2837829

Change-Id: I87d477d5be08e1103c689cb47cabbb07ae8f3e59
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>