Chore: Housekeeping tasks (#721)

- End point to return api version
- Move agent bot listener to sync dispatcher
- gem update

app/dispatchers/async_dispatcher.rb

@@ -9,7 +9,7 @@ class AsyncDispatcher < BaseDispatcher
   end
 
   def listeners
-    listeners = [AgentBotListener.instance, EmailNotificationListener.instance, ReportingListener.instance, WebhookListener.instance]
+    listeners = [EmailNotificationListener.instance, ReportingListener.instance, WebhookListener.instance]
     listeners << EventListener.instance
     listeners << SubscriptionListener.instance if ENV['BILLING_ENABLED']
     listeners

app/dispatchers/sync_dispatcher.rb

@@ -5,6 +5,6 @@ class SyncDispatcher < BaseDispatcher
   end
 
   def listeners
-    [ActionCableListener.instance]
+    [ActionCableListener.instance, AgentBotListener.instance]
   end
 end