package/php: security bump version to 7.4.22

Changelog: https://www.php.net/ChangeLog-7.php#7.4.22

Fixes CVE-2021-21704 & CVE-2021-217045.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/php/php.hash

@@ -1,5 +1,5 @@
 # From https://www.php.net/downloads.php
-sha256  1fa46ca6790d780bf2cb48961df65f0ca3640c4533f0bca743cd61b71cb66335  php-7.4.20.tar.xz
+sha256  8e078cd7d2f49ac3fcff902490a5bb1addc885e7e3b0d8dd068f42c68297bde8  php-7.4.22.tar.xz
 
 # License file
 sha256  a188db807d711536f71e27b7d36879d63480f7994dc18adc08e624b3c5430fff  LICENSE

package/php/php.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-PHP_VERSION = 7.4.20
+PHP_VERSION = 7.4.22
 PHP_SITE = http://www.php.net/distributions
 PHP_SOURCE = php-$(PHP_VERSION).tar.xz
 PHP_INSTALL_STAGING = YES