Update TEST_MAPPING am: d65235cf22 am: ba2fda9094 am: fbbac2dbd4 am: 854c6ea3d4

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cexpr/+/2106882

Change-Id: Ifa678de752cae6119cc954018b28ea7de5cb43b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>