chore: update changelog (#1198)

Author: ajasnosz

CHANGELOG.md

@@ -2,12 +2,19 @@
 
 ## Unreleased
 
+### Changed
+
+### Fixed
+
+
+## [1.12.3]
+
 ### Changed
 - change redis service name workers call from redis-headless to redis-master
 - migrate MongoDB subchart to 15.6.26
 - update MongoDB docker image to 7.0.14 for SC4SNMP docker installation
 
-### Fixed
+### Changed
 - Ensured `.Values.secret.name` is used during secret creation to prevent mismatched secret references in deployments
 - lack of `externalTrafficPolicy` in `values.schema.json`
 - update `mibserver` to 1.15.21 to fix problems with rendering pvc in case of local mibs compilation