Migrate to cargo_embargo. am: 888635dbe0 am: e2ee5bc919 am: 35741362a3

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/serde-xml-rs/+/2832452

Change-Id: I0ee79264609ac49058d8e249c645c6021235612f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>