deps: backport bff3074 from V8 upstream

Original commit message:

    Allow ICU to normalize time zones

    There's at least one case of a time zone alias: Asia/Kathmandu aliases
    Asia/Katmandu. ICU seems to normalize to the (deprecated) latter choice.
    V8 internationalization choked on this change; this patch interprets
    ICU's output more precisely and allows it.

    BUG=chromium:487322
    R=jungshik,adamk
    LOG=Y

    Review URL: https://codereview.chromium.org/1509273007

    Cr-Commit-Position: refs/heads/master@{#32769}

PR-URL: https://github.com/nodejs/node/pull/15562


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Steven R Loomis <srloomis@us.ibm.com>