package/libxml2: security bump to version 2.10.3

- [CVE-2022-40304] Fix dict corruption caused by entity reference cycles
- [CVE-2022-40303] Fix integer overflows with XML_PARSE_HUGE
- Fix overflow check in SAX2.c

https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libxml2/libxml2.hash

@@ -1,4 +1,4 @@
-# From http://ftp.acc.umu.se/pub/gnome/sources/libxml2/2.10/libxml2-2.10.2.sha256sum
-sha256  d240abe6da9c65cb1900dd9bf3a3501ccf88b3c2a1cb98317d03f272dda5b265  libxml2-2.10.2.tar.xz
+# From http://ftp.acc.umu.se/pub/gnome/sources/libxml2/2.10/libxml2-2.10.3.sha256sum
+sha256  5d2cc3d78bec3dbe212a9d7fa629ada25a7da928af432c93060ff5c17ee28a9c  libxml2-2.10.3.tar.xz
 # License files, locally calculated
 sha256  c5c63674f8a83c4d2e385d96d1c670a03cb871ba2927755467017317878574bd  Copyright

package/libxml2/libxml2.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 LIBXML2_VERSION_MAJOR = 2.10
-LIBXML2_VERSION = $(LIBXML2_VERSION_MAJOR).2
+LIBXML2_VERSION = $(LIBXML2_VERSION_MAJOR).3
 LIBXML2_SOURCE = libxml2-$(LIBXML2_VERSION).tar.xz
 LIBXML2_SITE = \
 	http://ftp.gnome.org/pub/gnome/sources/libxml2/$(LIBXML2_VERSION_MAJOR)