RFR: 8308021: Update IANA Language Subtag Registry to Version 2023-05-11

[Naoto Sato]

On Fri, 12 May 2023 17:56:12 GMT, Justin Lu <jlu at openjdk.org> wrote:

> Please review this trivial fix which updates the IANA data to version 5/11/2023. As the update only includes variant sub-tags, there is no impact to JDK tests. The update can be found [here](https://mm.icann.org/pipermail/ietf-languages-announcements/2023-May/000087.html).

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13962#pullrequestreview-1424976281