chore: bump to 0.6.0

Author: Bilb

package.json

@@ -2,7 +2,7 @@
   "main": "index.js",
   "name": "libsession_util_nodejs",
   "description": "Wrappers for the Session Util Library",
-  "version": "0.5.9",
+  "version": "0.6.0",
   "license": "GPL-3.0",
   "author": {
     "name": "Oxen Project",