Merge "Add Rust proc-macros to host snapshot update.py" am: ffb96b63ef am: aa52716392 am: b1c9f7f199

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

Change-Id: I882a996f67e6004110c65512b5f18d092cc9a913
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>