Update e2e cluster-api version (#182)

Author: joekr

test/e2e/config/e2e_conf.yaml

@@ -8,8 +8,8 @@ providers:
   - name: cluster-api
     type: CoreProvider
     versions:
-      - name: v1.2.1
-        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.1/core-components.yaml
+      - name: v1.2.6
+        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.6/core-components.yaml
         type: url
         files:
           - sourcePath: "../data/shared/v1beta1/metadata.yaml"
@@ -21,8 +21,8 @@ providers:
   - name: kubeadm
     type: BootstrapProvider
     versions:
-      - name: v1.2.1
-        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.1/bootstrap-components.yaml
+      - name: v1.2.6
+        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.6/bootstrap-components.yaml
         type: url
         files:
           - sourcePath: "../data/shared/v1beta1/metadata.yaml"
@@ -34,8 +34,8 @@ providers:
   - name: kubeadm
     type: ControlPlaneProvider
     versions:
-      - name: v1.2.1
-        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.1/control-plane-components.yaml
+      - name: v1.2.6
+        value: https://github.com/kubernetes-sigs/cluster-api/releases/download/v1.2.6/control-plane-components.yaml
         type: url
         files:
           - sourcePath: "../data/shared/v1beta1/metadata.yaml"