Update changelog for 12.1.3

kitchen-porter · kitchen-porter · commit 3d6303ef8dce · 2025-09-04T19:02:28.000+01:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 This file is used to list changes made in each version of the nagios cookbook.
 
-## Unreleased
+## 12.1.3 - *2025-09-04*
 
 Standardise files with files in sous-chefs/repo-management
 
