Bump harvester version

roles/netbootxyz/defaults/main.yml

@@ -273,8 +273,8 @@ releases:
     mirror: https://releases.rancher.com/harvester
     name: Harvester
     versions:
-    - code_name: v0.2.0
-      name: v0.2.0
+    - code_name: v0.3.0
+      name: v0.3.0
   ipfire:
     base_dir: releases/ipfire-2.x
     enabled: true