Update TEST_MAPPING am: 16befe9303 am: fd7d7eac77 am: 403118b983

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-error-attr/+/2107127

Change-Id: Ie97b315debf08e9bfe5e8e70884d707e1b1dec62
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>