Update TEST_MAPPING am: e899c8c6c4 am: a2d7656c61

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures-macro/+/2399355

Change-Id: I185cc8c45c35de6a17523e5fcd056cebb0551e51
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>