Upgrade rust/crates/regex to 1.5.4 am: 3874808a33 am: 8634f71550 am: df6134fce7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/1713148

Change-Id: I210bdbd56bc6e0736b59fc7d9654178a524526b5