Update TEST_MAPPING am: 51b265d07a am: f1b8423cf4 am: 6b31c1450c

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/codespan-reporting/+/2107313

Change-Id: I0258740a75a8e63dc6944d721c9973a2403db426
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>