RFR: 8318322: Update IANA Language Subtag Registry to Version 2023-10-16

[Naoto Sato]

On Tue, 17 Oct 2023 20:06:03 GMT, Justin Lu <jlu at openjdk.org> wrote:

> This change updates the IANA subtag registry to the update released on 2023-10-16.
> 
> Announcement -> https://mm.icann.org/pipermail/ietf-languages-announcements/2023-October/000089.html

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16227#pullrequestreview-1683655344