php7: update to 7.2.21

This fixes CVE-2019-11042 and CVE-2019-11041.

Compile and run tested on mxs platform

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

lang/php7/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=php
-PKG_VERSION:=7.2.19
+PKG_VERSION:=7.2.21
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=Michael Heimpold <mhei@heimpold.de>
@@ -17,7 +17,7 @@ PKG_CPE_ID:=cpe:/a:php:php
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=http://www.php.net/distributions/
-PKG_HASH:=4ffa2404a88d60e993a9fe69f829ebec3eb1e006de41b6048ce5e91bbeaa9282
+PKG_HASH:=de06aff019d8f5079115795bd7d8eedd4cd03daecb62d58abb18f492dd995c95
 
 PKG_FIXUP:=libtool autoreconf
 PKG_BUILD_PARALLEL:=1