feat: support Kubernetes v1.35 (#1152)

Furthermore, drop Kubernetes v1.31, which already EOL.

```rp-commits
feat: support Kubernetes v1.35
feat: drop support for Kubernetes v1.31
```

Author: lukasmetzner

.github/workflows/test.yml

@@ -39,10 +39,10 @@ jobs:
       fail-fast: false # Continue tests matrix if a flaky run occurs.
       matrix:
         k3s:
-          - v1.31
           - v1.32
           - v1.33
           - v1.34
+          - v1.35
 
     env:
       K3S_CHANNEL: ${{ matrix.k3s }}
@@ -73,7 +73,7 @@ jobs:
             kubectl
             skaffold
           helm: v4.1.1 # renovate: datasource=github-releases depName=helm/helm
-          kubectl: v1.35.0 # renovate: datasource=github-releases depName=kubernetes/kubernetes
+          kubectl: v1.35.1 # renovate: datasource=github-releases depName=kubernetes/kubernetes
           skaffold: v2.17.1 # renovate: datasource=github-releases depName=GoogleContainerTools/skaffold
 
       - name: Setup k3sup
@@ -165,7 +165,7 @@ jobs:
     environment: e2e-robot
 
     env:
-      K3S_CHANNEL: v1.34
+      K3S_CHANNEL: v1.35
       ENV: gha-${{ github.run_id }}-${{ github.run_attempt }}-robot
 
       ROBOT_ENABLED: "true"
@@ -191,7 +191,7 @@ jobs:
             kubectl
             skaffold
           helm: v4.1.1 # renovate: datasource=github-releases depName=helm/helm
-          kubectl: v1.35.0 # renovate: datasource=github-releases depName=kubernetes/kubernetes
+          kubectl: v1.35.1 # renovate: datasource=github-releases depName=kubernetes/kubernetes
           skaffold: v2.17.1 # renovate: datasource=github-releases depName=GoogleContainerTools/skaffold
 
       - name: Install k3sup

docs/reference/version-policy.md

@@ -12,10 +12,11 @@ Current Kubernetes Releases: https://kubernetes.io/releases/
 
 | Kubernetes | Cloud Controller Manager |                                                                                             Deployment File |
 | ---------- | -----------------------: | ----------------------------------------------------------------------------------------------------------: |
+| 1.35       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm-networks.yaml |
 | 1.34       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm-networks.yaml |
 | 1.33       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm-networks.yaml |
 | 1.32       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm-networks.yaml |
-| 1.31       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm-networks.yaml |
+| 1.31       |                  v1.29.2 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.29.2/ccm-networks.yaml |
 | 1.30       |                  v1.26.0 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.26.0/ccm-networks.yaml |
 | 1.29       |                  v1.25.1 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.25.1/ccm-networks.yaml |
 | 1.28       |                  v1.20.0 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.20.0/ccm-networks.yaml |
@@ -29,10 +30,11 @@ Current Kubernetes Releases: https://kubernetes.io/releases/
 
 | Kubernetes | Cloud Controller Manager |                                                                                    Deployment File |
 | ---------- | -----------------------: | -------------------------------------------------------------------------------------------------: |
+| 1.35       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm.yaml |
 | 1.34       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm.yaml |
 | 1.33       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm.yaml |
 | 1.32       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm.yaml |
-| 1.31       |                   latest |  https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/latest/download/ccm.yaml |
+| 1.31       |                  v1.29.2 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.29.2/ccm.yaml |
 | 1.30       |                  v1.26.0 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.26.0/ccm.yaml |
 | 1.29       |                  v1.25.1 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.25.1/ccm.yaml |
 | 1.28       |                  v1.20.0 | https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/v1.20.0/ccm.yaml |