Add version-specific docs note for 14.4 sidekiq cron issue

doc/administration/geo/replication/version_specific_updates.md

@@ -11,6 +11,10 @@ Review this page for update instructions for your version. These steps
 accompany the [general steps](updating_the_geo_sites.md#general-update-steps)
 for updating Geo nodes.
 
+## Updating to 14.4
+
+There is [an issue in GitLab 14.4.0 through 14.4.2](../../../update/index.md#1440) that can affect Geo and other features that rely on cronjobs. We recommend upgrading to GitLab 14.4.3 or later.
+
 ## Updating to 14.1, 14.2, 14.3
 
 ### Multi-arch images

doc/update/index.md

@@ -366,8 +366,12 @@ or [init scripts](upgrading_from_source.md#configure-sysv-init-script) by [follo
 
 - Git 2.33.x and later is required. We recommend you use the
   [Git version provided by Gitaly](../install/installation.md#git).
-
 - See [Maintenance mode issue in GitLab 13.9 to 14.4](#maintenance-mode-issue-in-gitlab-139-to-144).
+- After enabling database load balancing by default in 14.4.0, we found an issue where
+  [cron jobs would not work if the connection to PostgreSQL was severed](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/73716),
+  as Sidekiq would continue using a bad connection. Geo and other features that rely on
+  cron jobs running regularly do not work until Sidekiq is restarted. We recommend
+  upgrading to GitLab 14.4.3 and later if this issue affects you.
 
 ### 14.3.0