Upgrade futures-macro to 0.3.28 am: 96009b4e62 am: 4a06070bb9 am: 9c7fd70a43 am: 2d56f12984 am: 72fe116819 am: 72f7f4ffd4

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures-macro/+/2520196

Change-Id: I536cae71529bbd0be86ae6806de8ec3e838be6e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>