🌱 remove old kubernetes versions (#1443)

Author: batistein

README.md

@@ -82,10 +82,6 @@ This provider's versions can install and manage the following versions of Kubern
 
 |                   | Hetzner Provider `v1.0.x` |
 | ----------------- | ------------------------- |
-| Kubernetes 1.23.x | ✅                       |
-| Kubernetes 1.24.x | ✅                       |
-| Kubernetes 1.25.x | ✅                       |
-| Kubernetes 1.26.x | ✅                       |
 | Kubernetes 1.27.x | ✅                       |
 | Kubernetes 1.28.x | ✅                       |
 | Kubernetes 1.29.x | ✅                       |