Migrate to cargo_embargo. am: 865991ca32 am: ba148f0e3e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/annotate-snippets/+/2796413

Change-Id: Ica3829f4a9e74a7828c7b8daa53005d25fe6df13
Signed-off-by: Automerger Merge Worker <[email protected]>