Update changelog for 16.9.5

[ci skip]

Author: GitLab Release Tools Bot

CHANGELOG.md

@@ -73,6 +73,12 @@ No changes.
 
 - [Update Patroni to 3.0.1](gitlab-org/omnibus-gitlab@faba9e7605768373c4747fa7062ab36c7be74205) ([merge request](gitlab-org/omnibus-gitlab!6898))
 
+## 16.9.5 (2024-04-12)
+
+### Fixed (1 change)
+
+- [Fix patroni no longer working with update to ydiff 1.3](gitlab-org/omnibus-gitlab@75f31c334f3b767744c870b6a6608649eeca0cbf) ([merge request](gitlab-org/omnibus-gitlab!7537))
+
 ## 16.9.4 (2024-04-09)
 
 No changes.