Upgrade rust/crates/async-stream to 0.3.1 am: b7cdcf8095 am: 88a5c327ac am: f658afd40c am: 3acc453a2e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-stream/+/1712789

Change-Id: I3d63b95de691651f249598452809514d7e7530dc