Migrate to cargo_embargo. am: 13f024459d am: b4a8370cb4 am: ca9335c8ab

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/2822529

Change-Id: I1cc0ca9fae6bff4640cf1115282c94f9dfac18e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>