Merge "Add Rust proc-macros to host snapshot update.py" am: ffb96b63ef am: aa52716392 am: b1c9f7f199 am: 5af1da4cc3

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

Change-Id: If6ed565dabc3b5962a65d2cd6b68ebbf53246342
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>