Merge pull request #360 from firebase/update-version

Update version to 0.9.0.pre.3

Author: rebehe

lib/fastlane/plugin/firebase_app_distribution/version.rb

@@ -1,5 +1,5 @@
 module Fastlane
   module FirebaseAppDistribution
-    VERSION = "0.9.0.pre.2"
+    VERSION = "0.9.0.pre.3"
   end
 end