[lineup] チェロキー語学習者がiPadとMacで世代をつなぐ

[github-actions]

New Apple announcement detected by scripts/check-lineup.ts.

• Title: チェロキー語学習者がiPadとMacで世代をつなぐ
• Published: 2026-06-18T01:41:40.770Z
• Link: https://www.apple.com/jp/newsroom/2026/05/cherokee-language-learners-bridge-generations-with-ipad-and-mac/

If this introduces a new Mac model or supersedes an existing one, update:

• data/lineup.json — current lineup (and bump updatedAt)
• data/historical.json — move retired models here with their original retail prices