Update changelog for 16.2.6

GitLab Release Tools Bot · GitLab Release Tools Bot · commit 3cefd549dc35 · 2023-09-12T15:10:30.000Z
[ci skip]
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -56,6 +56,10 @@ No changes.
 
 - [Enable cache to configure for Redis Cluster](gitlab-org/omnibus-gitlab@8c0aa6b59ad8be8b62e1a720cb370aadb29add05) ([merge request](gitlab-org/omnibus-gitlab!7079))
 
+## 16.2.6 (2023-09-12)
+
+No changes.
+
 ## 16.2.5 (2023-08-31)
 
 ### Security (1 change)
