Increase preview version from 1.1.105-preview-3 to 1.1.106-preview-1 to make space for 1.1.105.

addon/manifest.json

@@ -4,7 +4,7 @@
   "description": "p≡p message encryption and authentication",
   "author": "p≡p Team for Thunderbird",
   "homepage_url": "https://pep.security",
-  "version": "1.1.105-preview-3",
+  "version": "1.1.106-preview-1",
   "default_locale": "en",
   "applications": {
     "gecko": {