JDK-8213294 has upgraded the IANA LSR data to 2018-10-31. There is a recent update made to it on 2018-11-30. So, it is better to take the latest version available and upgrade the language Subtag Registry to the latest one 2018-11-30: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
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