misc/codex: Update to 0.142.4

Changelog:

• https://github.com/openai/codex/releases/tag/rust-v0.142.2
• https://github.com/openai/codex/releases/tag/rust-v0.142.3
• https://github.com/openai/codex/releases/tag/rust-v0.142.4

Reported by: GitHub (watch releases)