luarocks: bump to version 2.2.1

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/luarocks/luarocks.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LUAROCKS_VERSION = 2.2.0
+LUAROCKS_VERSION = 2.2.1
 LUAROCKS_SITE = http://luarocks.org/releases
 LUAROCKS_LICENSE = MIT
 LUAROCKS_LICENSE_FILES = COPYING