Migrate to cargo_embargo. am: 716799034d am: e523f567c3 am: 1cd01e52e9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/termcolor/+/2828212

Change-Id: I4ec38a1406db9ec3b9c681e564b46d23a812e3f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>