Migrate to cargo_embargo. am: fe14e434be

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/x509-parser/+/2822773

Change-Id: Ia52acbf385f9303d686c3ed1f6ca32af4346a79d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>