Migrate to cargo_embargo. am: e53b3ccd03

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pest_meta/+/2821839

Change-Id: I48f93b3e03274d8b35a400a940a1a3f97f983b25
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>