Migrate to cargo_embargo. am: ca1db9f032 am: f023027bc2 am: 12ccf87cec

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

Change-Id: Ie96740085741fcff035b55121311ecf369dbf005
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>