Migrate to cargo_embargo. am: 865991ca32

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

Change-Id: I13a27c8196b04acc5e40f391cd6a302aad97b67f
Signed-off-by: Automerger Merge Worker <[email protected]>