Update TEST_MAPPING am: 09d8352336

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cexpr/+/2411594

Change-Id: If987a4be094925a80d912eb4c4e6d6cb5a760eec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>