Upgrade rust/crates/syn-mid to 0.5.1 am: 0d7fd466c4 am: 9d9da34d5e am: 00bce19294

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/syn-mid/+/1474976

Change-Id: I664f31fc4330999f35e02f52135f77967475a919