Upgrade async-stream to 0.3.4 am: 4b13b9fde6 am: f675554708

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-stream/+/2467320

Change-Id: I03d8b9cb04c5e80d2d671840db8ee19f20fa1c79
Signed-off-by: Automerger Merge Worker <[email protected]>