package/expat: security bump to version 2.6.0

Security fixes:
 - CVE-2023-52425: Fix quadratic runtime issues with big tokens that can
   cause denial of service, in partial where dealing with compressed XML
   input. Applications that parsed a document in one go -- a single call
   to functions XML_Parse or XML_ParseBuffer -- were not affected. The
   smaller the chunks/buffers you use for parsing previously, the bigger
   the problem prior to the fix.
 - CVE-2023-52426: Fix billion laughs attacks for users compiling
   *without* XML_DTD defined (which is not common). Users with XML_DTD
   defined have been protected since Expat >=2.4.0 (and that was
   CVE-2013-0340 back then).

https://blog.hartwork.org/posts/expat-2-6-0-released/

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

package/expat/expat.hash

@@ -1,7 +1,7 @@
-# From https://sourceforge.net/projects/expat/files/expat/2.5.0/
-md5  ac6677b6d1b95d209ab697ce8b688704  expat-2.5.0.tar.xz
-sha1  5178e13c1e34f4643d5118d5758babfe0e836fe2  expat-2.5.0.tar.xz
+# From https://sourceforge.net/projects/expat/files/expat/2.6.0/
+md5  bd169cb11f4b9bdfddadf9e88a5c4d4b  expat-2.6.0.tar.xz
+sha1  d87e8ab2a3c1deb858c6b22e5ade9d5673086004  expat-2.6.0.tar.xz
 
 # Locally calculated
-sha256  ef2420f0232c087801abf705e89ae65f6257df6b7931d37846a193ef2e8cdcbe  expat-2.5.0.tar.xz
+sha256  cb5f5a8ea211e1cabd59be0a933a52e3c02cc326e86a4d387d8d218e7ee47a3e  expat-2.6.0.tar.xz
 sha256  122f2c27000472a201d337b9b31f7eb2b52d091b02857061a8880371612d9534  COPYING

package/expat/expat.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-EXPAT_VERSION = 2.5.0
+EXPAT_VERSION = 2.6.0
 EXPAT_SITE = http://downloads.sourceforge.net/project/expat/expat/$(EXPAT_VERSION)
 EXPAT_SOURCE = expat-$(EXPAT_VERSION).tar.xz
 EXPAT_INSTALL_STAGING = YES