Merge "Add Rust proc-macros to host snapshot update.py" am: ffb96b63ef

Original change: https://android-review.googlesource.com/c/platform/development/+/2041926

Change-Id: I563e92a84754286353eab4872303a81aa2302c93
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>