Merge "Upgrade rust/crates/regex to 1.3.9" am: dc4835a95b am: caad50e848 am: 002331d57e am: 406b6d854e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/1320334

Change-Id: I3f2865e1b79890bd99785164bdf423c0e5ca2c99