Migrate to cargo_embargo. am: b71722ff58 am: 0fb2cb65a5 am: c548878610

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/itertools/+/2796435

Change-Id: I076e3f8701aa958b259ed5db99eb0043e4aad0cb
Signed-off-by: Automerger Merge Worker <[email protected]>