Update translations

Editor assessment

A well-behaved bulk-translation commit: imperative 'update', lowercase start, no trailing period, the i18n,curriculum compound scope, and an inline PR reference for traceability. The subject's 52 characters display without truncation. Its informational content is another matter — no locales named, no file counts, no body — so the entry functions purely as a pointer to the diff. For non-releasing chores that is a defensible economy, and the consistent shape of the translation-sync template makes tooling's job trivial. Within its genre, this is a strong, well-turned instance.