Locale data based on Unicode Consortium's CLDR has been upgraded to version 42. For the detailed locale data changes, please refer to the [Unicode Consortium's CLDR release notes](https://cldr.unicode.org/index/downloads/cldr-42).
Some of the notable changes in the upstream that may affect formatting are:
- [NBSP/NNBSP prefixed to AM/PM in time format, instead of a normal space](https://unicode-org.atlassian.net/browse/CLDR-14032)
- [" at " is no longer used for standard date/time format](https://unicode-org.atlassian.net/browse/CLDR-14831)
- [Fix first day of week info for China (CN)](https://unicode-org.atlassian.net/browse/CLDR-11510)
- [Japanese: Support numbers up to 9999京](https://unicode-org.atlassian.net/browse/CLDR-15966)