Add changelog for release v2.26.0-ck8s5

Author: lucianvlad

changelog/2.26.0.md

@@ -81,3 +81,13 @@ Released 2025-03-04
 ### Other(s)
 
 - [#420](https://github.com/elastisys/compliantkubernetes-kubespray/pull/420) - documentation: Update Ubuntu 24.04 migration guide to include instructions for UpCloud [@Ajarmar](https://github.com/Ajarmar)
+
+## v2.26.0-ck8s5
+
+Released 2025-05-13
+
+## Changes by kind
+
+### Other(s)
+
+- [#436](https://github.com/elastisys/compliantkubernetes-kubespray/pull/436) - other: Bump containerd-version image to v1.7.27 in origin fork v2.27.0 [@lucianvlad](https://github.com/lucianvlad)