Don't run cargo build for cargo_embargo. am: 285b521de5 am: 2dbfac8318

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/openssl/+/2841375

Change-Id: I1db80ef8f15b8a5615196d5362ae5694bbbea3eb
Signed-off-by: Automerger Merge Worker <[email protected]>