Update TEST_MAPPING am: 527b56e6aa am: 8d8d8cc839 am: a3c5542818

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-nested/+/1806182

Change-Id: I0f0c216dec36740a11ef48f64f1a3e78ce36764d