Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/fbc6faf..b9f6d0a

Add Latin-ASCII transliteration (Frank Tang)
https://chromium.googlesource.com/chromium/deps/icu/+/b9f6d0a

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,ftang@chromium.org

Change-Id: Ic00c9e3f4aa2a14a80e33f090975c73ec1169fa1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3384678
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#78596}