Use the ICU 67.1 new API DateTimePatternGenerator::getDefaultHourCycle
to replace a hack which get the pattern of "jjmm" to find out the
default hour cycle of a locale
Bump the required API version from 65 to 67

Bug: v8:10225
Change-Id: I3378edacb6dfb8400357ac0bf3d5d50b9fe008bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2173875Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67549}