Update sidekiq-cron to 1.4.0

What does this MR do and why?

This brings us to a version of sidekiq-cron that is tested against Ruby 3.

For #372374 (closed) and, ultimately, #369392 (closed).

Changelogs etc.

1. sidekiq-cron
   1. https://github.com/ondrejbartas/sidekiq-cron/blob/master/CHANGELOG.md
   2. https://my.diffend.io/gems/sidekiq-cron/1.2.0/1.4.0
2. et-orbi
   1. https://github.com/floraison/et-orbi/blob/master/CHANGELOG.md
   2. https://my.diffend.io/gems/et-orbi/1.2.1/1.2.7
3. raabro
   1. https://github.com/floraison/raabro/blob/master/CHANGELOG.md
   2. https://my.diffend.io/gems/raabro/1.1.6/1.4.0

Note that https://github.com/ondrejbartas/sidekiq-cron/issues/350 is filed against sidekiq-cron 1.7.0. However, we don't have date_as_argument set, and I can't reproduce. For instance, this shows args empty, as expected:

$ gdk redis-cli -n 1 hgetall resque:gitlab:cron_job:batched_background_migrations_worker
 1) "args"
 2) "[]"
 3) "date_as_argument"
 4) "false"
 5) "symbolize_args"
 6) "false"
 7) "status"
 8) "enabled"
 9) "active_job"
10) "false"
11) "cron"
12) "* * * * *"
13) "queue_name_delimiter"
14) ""
15) "klass"
16) "Database::BatchedBackgroundMigrationWorker"
17) "last_enqueue_time"
18) "2022-09-06 15:43:05 +0000"
19) "queue_name_prefix"
20) ""
21) "description"
22) ""
23) "name"
24) "batched_background_migrations_worker"
25) "message"
26) "{\"retry\":false,\"queue\":\"default\",\"backtrace\":true,\"version\":0,\"queue_namespace\":\"cronjob\",\"class\":\"Database::BatchedBackgroundMigrationWorker\",\"args\":[]}"

How to set up and validate locally

1. On master, start the GDK.
2. Check out this branch.
3. Restart rails-web and rails-background-job.
4. Sidekiq jobs should still work, especially cron jobs.

A good test:

$ gdk tail rails-background-jobs | sed 's/^.* : ....//' | jq -c '[.class, .args, .job_status]'
["UpdateAllMirrorsWorker",[],"start"]
["ScheduleMergeRequestCleanupRefsWorker",[],"start"]
["UserStatusCleanup::BatchWorker",[],"start"]
["Database::BatchedBackgroundMigrationWorker",[],"start"]
["ElasticIndexInitialBulkCronWorker",[],"done"]
["IncidentManagement::PendingEscalations::ScheduleCheckCronWorker",[],"done"]
["ElasticIndexBulkCronWorker",[],"done"]
["LooseForeignKeys::CleanupWorker",[],"done"]
["Database::BatchedBackgroundMigration::CiDatabaseWorker",[],"done"]
["Geo::SidekiqCronConfigWorker",[],"done"]
["ScheduleMergeRequestCleanupRefsWorker",[],"done"]
["UpdateAllMirrorsWorker",[],"done"]
["UserStatusCleanup::BatchWorker",[],"done"]
["Database::BatchedBackgroundMigrationWorker",[],"done"]
["NewIssueWorker",["522","1","[FILTERED]"],"start"]
["Issues::PlacementWorker",["[FILTERED]","24"],"start"]
["Namespaces::OnboardingIssueCreatedWorker",["1"],"start"]
["WebHookWorker",["1","[FILTERED]","issue_hooks","{}"],"start"]
["Namespaces::OnboardingIssueCreatedWorker",["1"],"done"]
["Issues::PlacementWorker",["[FILTERED]","24"],"done"]
[null,null,null]
[null,null,null]
["NewIssueWorker",["522","1","[FILTERED]"],"done"]
[null,null,null]
["WebHooks::LogExecutionWorker",["1","[FILTERED]","ok","707c251b340eef6831cffe70"],"start"]
["WebHookWorker",["1","[FILTERED]","issue_hooks","{}"],"done"]

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.