libidn: bump to version 1.28

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libidn/libidn.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBIDN_VERSION = 1.27
+LIBIDN_VERSION = 1.28
 LIBIDN_SITE = $(BR2_GNU_MIRROR)/libidn
 LIBIDN_INSTALL_STAGING = YES
 LIBIDN_CONF_ENV = EMACS="no"