RFR: 8362428: Update IANA Language Subtag Registry to Version 2025-08-25

Tue Dec 2 18:44:31 UTC 2025

On Tue, 2 Dec 2025 18:18:29 GMT, Justin Lu <jlu at openjdk.org> wrote:

> Routine update to IANA subtag registry data with [latest data](https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry). Version is bumped to 2025-08-25.

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28612#pullrequestreview-3531645229