package/php: bump version to 7.4.8

Quoting https://www.php.net/
"For windows users running an official build, this release contains a
 patched version of libcurl addressing CVE-2020-8159.

For all other consumers of PHP, this is a bug fix release."

Changelog: https://www.php.net/ChangeLog-7.php#7.4.8

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/php/php.hash

@@ -1,5 +1,5 @@
 # From https://www.php.net/downloads.php
-sha256  53558f8f24cd8ab6fa0ea252ca8198e2650160649681ce5230c1df1dc2b52faf  php-7.4.7.tar.xz
+sha256  642843890b732e8af01cb661e823ae01472af1402f211c83009c9b3abd073245  php-7.4.8.tar.xz
 
 # License file
 sha256  0967ad6cf4b7fe81d38709d7aaef3fecb3bd685be7eebb37b864aa34c991baa7  LICENSE

package/php/php.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-PHP_VERSION = 7.4.7
+PHP_VERSION = 7.4.8
 PHP_SITE = http://www.php.net/distributions
 PHP_SOURCE = php-$(PHP_VERSION).tar.xz
 PHP_INSTALL_STAGING = YES