Update TEST_MAPPING am: 74ed0f6c3f am: 51e167f5b5 am: 28009598d7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libloading/+/2107520

Change-Id: I657dce8539fd74dfbb066bbe763027285a8c6df1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>