Add changelog for release v0.45.1

Author: Ajarmar

changelog/0.45.md

@@ -53,3 +53,18 @@ Released 2025-03-19
 - [8618c11a](https://github.com/elastisys/compliantkubernetes-apps/pull/2465/commits/8618c11a1c5172f8ac7738f4c604e156225915c2) - release: Update grafana and opensearch dashboards [@HaoruiPeng](https://github.com/HaoruiPeng)
 - [70645a16](70645a16fd5a3b17bb4d1e3be825faa19720d109) - bug: Fix templating issue for external-dns affinity and resources [@HaoruiPeng](https://github.com/HaoruiPeng)
 - [3f83e724](https://github.com/elastisys/compliantkubernetes-apps/pull/2465/commits/3f83e724a343548c0924a7c94cb396523027cd33) - Add changelog for release v0.45.0 [@HaoruiPeng](https://github.com/HaoruiPeng)
+
+## v0.45.1
+
+Released 2025-03-25
+
+> [!WARNING]
+> **Security Notice(s)**
+>
+> - Ingress-nginx upgraded to address the following CVEs:<br>CVE-2025-24513<br>CVE-2025-24514<br>CVE-2025-1097<br>CVE-2025-1098<br>CVE-2025-1974
+
+## Changes by kind
+
+### Improvement(s)
+
+- [#2477](https://github.com/elastisys/compliantkubernetes-apps/pull/2477) - Upgrade ingress-nginx chart to v4.12.1 [@anders-elastisys](https://github.com/anders-elastisys)