doc: added changelog (#2771)

Author: Pavan-Gunda

changelog/0.47.md

@@ -86,3 +86,11 @@ Released 2025-07-31
 - [b2cd9dd](https://github.com/elastisys/compliantkubernetes-apps/commit/b2cd9ddc6e7ebb23af74d4b3cd98a57e4d7fabc5) - apps: bump grafana image version to 11.5.7
 - [8786069](https://github.com/elastisys/compliantkubernetes-apps/commit/87860693c284dd174270520d0f7fceb42c2771a6) - apps sc: remove hard anti-affinity for opensearch from default elastx config
 - [7f2670b](https://github.com/elastisys/compliantkubernetes-apps/commit/7f2670b9222f81c99e3cefe3a2b0316ad4e02fe2) - apps sc: sum ThanosReceiveTrafficBelowThreshold alert to adjust for multiple receive distributors
+
+## v0.47.3
+
+Released 2025-09-30
+
+### Improvement(s)
+
+- [e5d4c98](https://github.com/elastisys/compliantkubernetes-apps/commit/e5d4c983e09fecb367ff7cafe656382653f2c11f) - calico-accountant patch [@Eliastisys](https://github.com/Eliastisys)