Bump to v2.2.0-rc3

Author: finneyj

module.json

@@ -1,10 +1,10 @@
 {
   "name": "microbit",
-  "version": "2.2.0-rc0",
+  "version": "2.2.0-rc3",
   "description": "A simple to use collection of the most commonly used components in the micro:bit runtime",
   "license": "MIT",
   "dependencies": {
-    "microbit-dal": "lancaster-university/microbit-dal#v2.2.0-rc0"
+    "microbit-dal": "lancaster-university/microbit-dal#v2.2.0-rc3"
   },
   "extraIncludes": [
     "inc"