Migrate to cargo_embargo. am: 8d81961642 am: 98bd3d76c2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pin-project-internal/+/2829873

Change-Id: Ia497063916ca16f899447966d0ffbdeeb79f33ac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>