package/php: security bump version to 8.0.8
Changelog: https://www.php.net/ChangeLog-8.php#8.0.8
Fixes CVE-2021-21704 & CVE-2021-217045.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>