Update TEST_MAPPING am: 74ed0f6c3f am: 51e167f5b5

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

Change-Id: Ie12b75030b8460a8403d6df1b5071db3abcc2917
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>