Merge pull request 'Docs updates - cherry pick' (#363) from release/v1.29 into main

Reviewed-on: ZeroDownTime/kubezero#363

README.md

@@ -19,7 +19,7 @@ KubeZero is a Kubernetes distribution providing an integrated container platform
 
 # Version / Support Matrix
 KubeZero releases track the same *minor* version of Kubernetes.
-Any 1.26.X-Y release of Kubezero supports any Kubernetes cluster 1.26.X.
+Any 1.30.X-Y release of Kubezero supports any Kubernetes cluster 1.30.X.
 
 KubeZero is distributed as a collection of versioned Helm charts, allowing custom upgrade schedules and module versions as needed.
 
@@ -28,15 +28,15 @@ KubeZero is distributed as a collection of versioned Helm charts, allowing custo
 gantt
     title KubeZero Support Timeline
     dateFormat  YYYY-MM-DD
-    section 1.27
-    beta     :127b, 2023-09-01, 2023-09-30
-    release  :after 127b, 2024-04-30
     section 1.28
     beta     :128b, 2024-03-01, 2024-04-30
     release  :after 128b, 2024-08-31
     section 1.29
-    beta     :129b, 2024-07-01, 2024-08-30
+    beta     :129b, 2024-07-01, 2024-07-31
     release  :after 129b, 2024-11-30
+    section 1.30
+    beta     :130b, 2024-09-01, 2024-10-31
+    release  :after 130b, 2025-02-28
 ```
 
 [Upstream release policy](https://kubernetes.io/releases/)
@@ -44,7 +44,7 @@ gantt
 # Components
 
 ## OS
-- all compute nodes are running on Alpine V3.19
+- all compute nodes are running on Alpine V3.20
 - 1 or 2 GB encrypted root file system
 - no external dependencies at boot time, apart from container registries
 - minimal attack surface