Migrate to cargo_embargo. am: edb6cc32d6 am: 5fc8a26aa1 am: 033ed646e0

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/url/+/2836696

Change-Id: I192cf27f017b2206a48a78d8a101be9938072d9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>