docs(changelog): refactor format to follow 'Keep a Changelog' and add latest entry

CHANGELOG.md

@@ -1,14 +1,48 @@
 # CHANGELOG
 
-## Enable automatic updates on control plane / 2024-11-14
+## [0.5.0] - 2024-11-20
 
-See [os/automated-upgrades](/docs/os/automated-upgrades.md).
+### Added
 
-## Update Kubernetes to v1.30.4 / 2024-08-30
+- Added Cilium as CNI
+  - with kube-proxy replacement mode enabled
+
+### Changed
+
+- Disable vanilla Kubernetes network policy
+- Change node IP to Hetzner Cloud Network IPs (private)
+- Add node external IP - VM public IPv4
+
+### Removed
+
+- Disabled kube-proxy
+- Disabled flannel CNI
+
+
+## [0.4.0] - 2024-11-15
+
+### Added
+
+- Enable automatic updates on all worker nodes
+  See [os/automated-upgrades](/docs/os/automated-upgrades.md).
+
+
+## [0.3.0] - 2024-11-14
+
+### Added
+
+- Enable automatic updates on control plane
+  See [os/automated-upgrades](/docs/os/automated-upgrades.md).
+
+## [0.2.0] - 2024-08-30
+
+### Changed
 
 - Upgrade the cluster to Kubernetes (k3s) version v1.30 (`v1.30.4`)
 
-## Update Kubernetes to v1.29.8 / 2024-08-30
+## [0.1.0] - 2024-08-30
+
+### Changed
 
 - Upgrade the cluster to Kubernetes (k3s) version v1.29 (`v1.29.8`)
 - Upgrade the node OS (Rocky Linux 9, `dnf update -y`)