Change SyncSeatLinkWorker cron job execution time

config/initializers/1_settings.rb

@@ -671,7 +671,7 @@ Gitlab.ee do
   Settings.cron_jobs['elastic_migration_worker']['cron'] ||= '*/30 * * * *'
   Settings.cron_jobs['elastic_migration_worker']['job_class'] ||= 'Elastic::MigrationWorker'
   Settings.cron_jobs['sync_seat_link_worker'] ||= Settingslogic.new({})
-  Settings.cron_jobs['sync_seat_link_worker']['cron'] ||= "#{rand(60)} 0 * * *"
+  Settings.cron_jobs['sync_seat_link_worker']['cron'] ||= "#{rand(60)} 3 * * * UTC"
   Settings.cron_jobs['sync_seat_link_worker']['job_class'] = 'SyncSeatLinkWorker'
   Settings.cron_jobs['web_application_firewall_metrics_worker'] ||= Settingslogic.new({})
   Settings.cron_jobs['web_application_firewall_metrics_worker']['cron'] ||= '0 1 * * 0'

ee/spec/initializers/1_settings_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe '1_settings' do
+  context 'cron jobs' do
+    subject(:cron_jobs) { Settings.cron_jobs }
+
+    context 'sync_seat_link_worker cron job' do
+      # explicit use of UTC for self-managed instances to ensure job runs after a Customers Portal job
+      it 'schedules the job at the correct time' do
+        expect(cron_jobs.dig('sync_seat_link_worker', 'cron')).to match(/[1-5]{0,1}[0-9]{1,2} 3 \* \* \* UTC/)
+      end
+    end
+  end
+end