Migrate to cargo_embargo. am: ca1db9f032 am: f023027bc2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/thiserror-impl/+/2833292

Change-Id: I1a11f62dc950cf06428b1503bffa1fcc542fba22
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>