Upgrade rust/crates/async-trait to 0.1.38 am: d8abf3ddb5 am: d1e2f59f50

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-trait/+/1402792

Change-Id: I71bf8621033085b29025010f34ffa02c54553598