Migrate to cargo_embargo. am: 147d7ea1fc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/codespan-reporting/+/2822238

Change-Id: I4ff4cf4495c91b6c103c1f8fa3c07a6ebd834f6e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>