package/php: bump version to 8.3.21

Changelog: https://www.php.net/ChangeLog-8.php#8.3.21

Release notes:
https://news-web.php.net/php.announce/457
https://news-web.php.net/php.announce/458

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 7f5732a9a020df2cd4e5448a73f165a3b2154cf9)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

package/php/php.hash

@@ -1,5 +1,5 @@
 # From https://www.php.net/downloads.php
-sha256  976e4077dd25bec96b5dfe8938052d243bbd838f95368a204896eff12756545f  php-8.3.19.tar.xz
+sha256  4dfb329f209a552c3716394fc123bb62e80a468b55ce27fc8cb0fd5f30b9dcd6  php-8.3.21.tar.xz
 
 # License file
 sha256  b42e4df5e50e6ecda1047d503d6d91d71032d09ed1027ba1ef29eed26f890c5a  LICENSE

package/php/php.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-PHP_VERSION = 8.3.19
+PHP_VERSION = 8.3.21
 PHP_SITE = https://www.php.net/distributions
 PHP_SOURCE = php-$(PHP_VERSION).tar.xz
 PHP_INSTALL_STAGING = YES