Migrate to cargo_embargo. am: 4a9384f6a9 am: 59a60b20d5 am: 28b9291266

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pathdiff/+/2824493

Change-Id: If0805f3b909ac7edab5ce1207cbcc277d3142e28
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>