弊ぼっちの3.0.2は2ヶ月ちょっと走ってたっぽい
$ git log -n 2 .ruby-version
commit a6d9018ea6a6d3caf9f1aae66cbbfb95d4760611 (HEAD -> use-ruby30, origin/use-ruby30)
Author: zunda <zundan@gmail.com>
Date: Wed Nov 24 08:49:14 2021 -1000
Upgrade Ruby to 3.0.3
https://www.ruby-lang.org/en/news/2021/11/24/ruby-3-0-3-released/
commit 0c140695d73baf9e3f253e745150b41467698ff4
Author: zunda <zundan@gmail.com>
Date: Thu Sep 9 20:14:57 2021 -1000
Use ruby-3.0.2
www.ruby-lang.orgRuby 3.0.3 Released