brew 2021-11-23

• [2021-11-23 23:48:39 +0900]: utils: add method ensure_formula_installed!
• [2021-11-23 22:35:44 +0900]: dev-cmd/cat: require "formula" only when necessary
• [2021-11-23 20:57:59 +0900]: Update maintainers, manpage and completions.
• [2021-11-23 03:09:19 +0900]: brew vendor-gems: commit updates.
• [2021-11-23 03:06:43 +0900]: Apply suggestions from code review
• [2021-11-23 03:04:27 +0900]: build(deps-dev): bump sorbet in /Library/Homebrew
• [2021-11-23 03:01:54 +0900]: build(deps-dev): bump github-pages from 221 to 222 in /docs
• [2021-11-23 01:24:15 +0900]: dev-cmd/cat: auto-install bat when running brew cat ... with HOMEBREW_BAT set