style(rubocop): fix all safe auto correctable offenses

config/cron.rb

@@ -1,26 +1,26 @@
 module Clockwork
 
   configure do |config|
-    config[:tz] = 'UTC'
+    config[:tz] = "UTC"
     config[:logger] = Postal.logger_for(:cron)
   end
 
-  every 1.minute, 'every-1-minutes' do
+  every 1.minute, "every-1-minutes" do
     RequeueWebhooksJob.queue(:main)
     SendNotificationsJob.queue(:main)
   end
 
-  every 1.hour, 'every-hour', :at => ['**:15'] do
+  every 1.hour, "every-hour", at: ["**:15"] do
     CheckAllDNSJob.queue(:main)
     ExpireHeldMessagesJob.queue(:main)
     CleanupAuthieSessionsJob.queue(:main)
   end
 
-  every 1.hour, 'every-hour', :at => ['**:45'] do
+  every 1.hour, "every-hour", at: ["**:45"] do
     PruneWebhookRequestsJob.queue(:main)
   end
 
-  every 1.day, 'every-day', :at => ['03:00'] do
+  every 1.day, "every-day", at: ["03:00"] do
     ProcessMessageRetentionJob.queue(:main)
     PruneSuppressionListsJob.queue(:main)
   end