Update changelog with a missing note for 1.2.3

CHANGELOG.md

@@ -188,6 +188,7 @@ BUG FIXES:
 * catalog: Allow renaming nodes with IDs. [[GH-3974](https://github.com/hashicorp/consul/issues/3974)],[[GH-4413](https://github.com/hashicorp/consul/issues/4413)],[[GH-4415](https://github.com/hashicorp/consul/pull/4415)]
 * dns: Fixes a bug with the DNS recursor, where we would not move onto the next provided recursor if we encounter a **SERVFAIL** or **REFUSED** status. [[GH-4461](https://github.com/hashicorp/consul/pull/4461)]
 * server: Fixed a memory leak in blocking queries against /event/list. [[GH-4482](https://github.com/hashicorp/consul/issues/4482)]
+* server: Fixed an issue where autopilot health checking could mistakenly mark healthy servers as failed, causing a non-voting server to be promoted unnecessarily. [[GH-4528]](https://github.com/hashicorp/consul/pull/4528)
 * snapshot: Fixed a bug where node metadata wasn't being included in or restored from the snapshots. [[GH-4524](https://github.com/hashicorp/consul/issues/4524)]
 * connect: Fixed a bug where managed proxy instances registered for instances with different name and ID and with restrictive ACL would not be allowed. [[GH-4619](https://github.com/hashicorp/consul/issues/4619)]
 * connect: Fixed a bug where built-in CA state was not correctly restored from a snapshot [[GH-4535](https://github.com/hashicorp/consul/pull/4535)]