Upgrade rust/crates/protobuf-codegen to 2.16.2 am: 72fec014a8

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/protobuf-codegen/+/1361179

Change-Id: I74c3656d0a3012a0db67d94f2ad6e60a386e46bf