Migrate to cargo_embargo. am: 3cb9189771

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/googletest/+/2824500

Change-Id: I5b2210345d6e95a3be9cdca6923f25c3eef9a78c
Signed-off-by: Automerger Merge Worker <[email protected]>