Update TEST_MAPPING am: ceecae3247

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/2411484

Change-Id: I16997d9a6dc6cd2b1e7deab70a787c7f37e80844
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>