Prevent amplification of ReactiveCachingWorker jobs upon failures

Closes #64176

See merge request gitlab-org/gitlab-ce!30432

Upgrade Rouge to 3.5.1

See merge request gitlab-org/gitlab-ce!30431

Revert "Increase rspec parallelism"

See merge request gitlab-org/gitlab-ce!30429

This release includes continued improvements to the library, fixes for a
number of lexers and support for three new languages:
https://github.com/rouge-ruby/rouge/releases

When `ReactiveCachingWorker` hits an SSL or other exception that occurs
quickly and reliably, automatically rescheduling a new worker could lead
to excessive number of jobs being scheduled. This happens because not
only does the failed job get rescheduled in a minute, but each Sidekiq
retry will also add even more rescheduled jobs.

In busy instances, this can become an issue because large numbers of
`ReactiveCachingWorker` running can cause high rates of `ExclusiveLease`
reads to occur and possibly saturate the Redis server with queries.

We now disable this automatic retry and rely on Sidekiq to perform its 3
retries with a backoff period.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/64176

Geo: refactor some specs

See merge request gitlab-org/gitlab-ee!14518

The way Shared Examples were being used (in reverse) were
causing issues and forcing multiple `let` blocks to be replicated
at each context.

Remove applySuggestion from notes service

See merge request gitlab-org/gitlab-ce!30399

This reverts merge request !30130

Merge branch '12649-spec-failure-in-ee-spec-services-ci_minutes_usage_notify_service_spec-rb' into 'master'

Fix spec failure in ee/spec/services/ci_minutes_usage_notify_service_spec.rb"

Closes #12649

See merge request gitlab-org/gitlab-ee!14578

The order here doesn't matter and causes failures in CI

Fix invalid SSL certificate errors on Drone CI service

See merge request gitlab-org/gitlab-ce!30422

Some services can raise OpenSSL::X509::CertificateError due
to an invalid SSL certificates, with OpenSSL::OpenSSLError
we can handle these errors.

Add queue_size method to ApplicationWorker

See merge request gitlab-org/gitlab-ce!30416

Increase rate at which UpdateAllMirrorsWorker schedules jobs and reschedules itself

Closes #11874

See merge request gitlab-org/gitlab-ee!14573

Edit text, using correct terms

See merge request gitlab-org/gitlab-ce!30382

Added experimental languages to license management docs.

See merge request gitlab-org/gitlab-ce!29932

Prioritize CI mirrors

See merge request gitlab-org/gitlab-ee!14575

Fix failing e2e tests - initialize Issue labels

See merge request gitlab-org/gitlab-ce!30375

Add Action to Remove Project from Env Dashboard

See merge request gitlab-org/gitlab-ee!14563

Previously, UpdateAllMirrorsWorker would only reschedule itself when
enough mirrors were waiting to sync to fill up all available capacity.

By setting the next execution time in the past, they will be
prioritized before any other mirrors.

Fix top position of sticky file header on discussion tab

Closes #63976

See merge request gitlab-org/gitlab-ce!30410

Edit new text on visibility setting

See merge request gitlab-org/gitlab-ce!30281

Documentation: Update installation from source document

See merge request gitlab-org/gitlab-ce!30380