Update TEST_MAPPING am: 4ef8926112

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/scopeguard/+/2411655

Change-Id: If40cf622ced0f81abccc003a81629fd5e9edb9b4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>