Codex self-update emits Homebrew rename warning (`brew upgrade codex`)

What version of Codex is running?

codex-cli 0.89.0

What subscription do you have?

N/A

Which model were you using?

_No response_

What platform is your computer?

_No response_

What terminal emulator and version are you using (if applicable)?

_No response_

What issue are you seeing?

Warning: Formula codex was renamed to homebrew/cask/codex.

What steps can reproduce the bug?

Trigger the Codex self-update on a system where Codex is installed via Homebrew cask. This results in the following command being executed:

brew upgrade codex

What is the expected behavior?

The Codex self-update should not emit a Homebrew rename warning.

Additional information

_No response_