Migrate to cargo_embargo. am: 906d1a2cb9 am: 16047f5b27 am: 73ab2b8023

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/static_assertions/+/2832578

Change-Id: I79ab528c70ba5ab837e3a96ea85f9192cc66252a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>