Set known default password for sample users

This enables us to easily log in as one of the sample users to test
functionality as enterprise user or customer instead of admin.

lib/tasks/sample_data/user_factory.rb

@@ -30,7 +30,7 @@ module SampleData
 
     def create_user(name)
       email = "#{name.downcase.tr(' ', '.')}@example.org"
-      password = Spree::User.friendly_token
+      password = "ofn123"
       log "- #{email}"
       user = Spree::User.create_with(
         password:,