Migrate to cargo_embargo. am: 888635dbe0 am: 1715e253c5 am: 9fbf404136

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

Change-Id: Ic05218521dd355c741b609428ec99df15000892f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>