testing/php8: security upgrade to 8.0.28
- CVE-2023-0567
- CVE-2023-0568
- CVE-2023-0662
https://www.php.net/releases/8_0_28.php
Needs backport to 3.16 and 3.15
Edited by Andy Postnikov
https://www.php.net/releases/8_0_28.php
Needs backport to 3.16 and 3.15