libunistring: update to 1.2

Release notes:
  https://git.savannah.gnu.org/gitweb/?p=libunistring.git;a=blob_plain;f=NEWS

Signed-off-by: Aleksey Vasilenko <aleksey.vasilenko@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16065
Signed-off-by: Robert Marko <robimarko@gmail.com>

package/libs/libunistring/Makefile

@@ -1,12 +1,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libunistring
-PKG_VERSION:=1.1
+PKG_VERSION:=1.2
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/$(PKG_NAME)
-PKG_HASH:=827c1eb9cb6e7c738b171745dac0888aa58c5924df2e59239318383de0729b98
+PKG_HASH:=632bd65ed74a881ca8a0309a1001c428bd1cbd5cd7ddbf8cedcd2e65f4dcdc44
 
 PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1