Migrate to cargo_embargo. am: 566a910942

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tinytemplate/+/2828073

Change-Id: Idb3357b88ae67c0f9df4e0fba2d3b6122f914d73
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>