Migrate to cargo_embargo. am: e69b1970fd am: 57863ac504

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pest/+/2822119

Change-Id: I6fd98db94cfadded7a136cf7c7f0cf30a451aad5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>