Update changelog for 16.5.7

GitLab Release Tools Bot · GitLab Release Tools Bot · commit 1b8bc6347edd · 2024-01-13T01:04:54.000Z
[ci skip]
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -119,6 +119,10 @@ No changes.
 
 - [Update Mattermost to 9.1.0](gitlab-org/omnibus-gitlab@3cedfa24af36c0f7d6d149ddd0956f5bce20d0e7) by @akis.maziotis ([merge request](gitlab-org/omnibus-gitlab!7206))
 
+## 16.5.7 (2024-01-13)
+
+No changes.
+
 ## 16.5.6 (2024-01-11)
 
 No changes.
