tools/expat: update to 2.4.7

Mostly a bug fix to the bug fix to CVE-2022-25236

Signed-off-by: Rosen Penev <rosenp@gmail.com>

tools/expat/Makefile

@@ -9,10 +9,10 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=expat
 PKG_CPE_ID:=cpe:/a:libexpat:expat
-PKG_VERSION:=2.4.6
+PKG_VERSION:=2.4.7
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
-PKG_HASH:=ce317706b07cae150f90cddd4253f5b4fba929607488af5ac47bf2bc08e31f09
+PKG_HASH:=e149bdd8b90254c62b3d195da53a09bd531a4d63a963b0d8a5268d48dd2f6a65
 PKG_SOURCE_URL:=https://github.com/libexpat/libexpat/releases/download/R_$(subst .,_,$(PKG_VERSION))
 
 include $(INCLUDE_DIR)/host-build.mk