Update the yotta module version number

The minor version must rise to allow other software with dependencies on mbed
TLS to be dependent on the next version following the 2016 Q1 release.
diff --git a/yotta/data/module.json b/yotta/data/module.json
index a132c93..f303783 100644
--- a/yotta/data/module.json
+++ b/yotta/data/module.json
@@ -1,6 +1,6 @@
 {
     "name": "mbedtls",
-    "version": "2.2.3",
+    "version": "2.3.0",
     "description": "The mbed TLS crypto/SSL/TLS library",
     "licenses": [
         {