Update TEST_MAPPING am: cbc4eb82c1

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/either/+/2411873

Change-Id: I2fbf4bf27e894f7f4d88dec20614632950dfcf18
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>