Check Salesforce for closing timestamp as soon as courses end

We sometimes close courses before they reach the 'archived' threshold, so we should start syncing that bit of Salesforce data without waiting for the update window to end.

app/workers/daily_update/salesforce_sync_worker.rb

@@ -11,7 +11,7 @@ def perform
       PushCourseToSalesforce.new(course)
     end
     ClassroomProgramCourse
-      .archived
+      .ended
       .where(withdrawn: false)
       .reject(&:closed?)
       .select(&:approved?).each do |course|