Bump yotta version number to 2.2.0-rc2
diff --git a/yotta/data/module.json b/yotta/data/module.json
index f1adca6..0ff23f0 100644
--- a/yotta/data/module.json
+++ b/yotta/data/module.json
@@ -1,6 +1,6 @@
 {
     "name": "mbedtls",
-    "version": "2.2.0-rc.1",
+    "version": "2.2.0-rc.2",
     "description": "The mbed TLS crypto/SSL/TLS library",
     "licenses": [
         {