Upgrade rust/crates/unicode-normalization to 0.1.19 am: 674441f567 am: 0b757b34fd

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/unicode-normalization/+/1740228

Change-Id: I428dc00cdce9dbc9146a621d994c48828f2366d4