Migrate to cargo_embargo. am: d051a08333 am: 874a4b026b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pest_derive/+/2821938

Change-Id: Ic0d6105ed40dfb4a21774f90495e7c10be022521
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>