*/php81: Update version 8.1.28=>8.1.29

• Fix comment in rc files
• Make the rc script jail ready [1]

Changelog: https://www.php.net/ChangeLog-8.php#8.1.29
Reported by: netchile [1]

(cherry picked from commit 4940c355d6948e62abce39f5fa695bcbfc8f1f3e)