Merge branch 'axil-correct-time-zone-command' into 'master'

Don't use the time:zones task to list the valid time zones

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159809



Merged-by: Achilleas Pipinellis <axil@gitlab.com>
Approved-by: Rémy Coutable <remy@rymai.me>

config/gitlab.yml.example

@@ -95,7 +95,8 @@ production: &base
 
     ## Date & Time settings
     # Uncomment and customize if you want to change the default time zone of GitLab application.
-    # To see all available zones, run `bundle exec rake time:zones:all RAILS_ENV=production`
+    # To see all available time zones in a valid format, run `timedatectl list-timezones`
+    # on a Linux host, or 'TZInfo::Timezone.all_identifiers' in a Rails console.
     # time_zone: 'UTC'
 
     ## Email settings