nano: bump to version 2.3.1

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

package/nano/nano.mk

@@ -4,8 +4,8 @@
 #
 #############################################################
 
-NANO_VERSION = 2.2.6
-NANO_SITE = http://www.nano-editor.org/dist/v2.2
+NANO_VERSION = 2.3.1
+NANO_SITE = http://www.nano-editor.org/dist/v2.3
 NANO_MAKE_ENV = CURSES_LIB="-lncurses"
 NANO_CONF_OPT = --without-slang --enable-tiny
 NANO_DEPENDENCIES = ncurses