update kuberenetes version

Author: peterrsongg

MtdrSpring/terraform/containerengine.tf

@@ -8,7 +8,7 @@ resource "oci_containerengine_cluster" "mtdrworkshop_cluster" {
     ]
     subnet_id = oci_core_subnet.endpoint.id
   }
-  kubernetes_version  = "v1.20.8"
+  kubernetes_version  = "v1.23.4"
   name                = "mtdrworkshopcluster"
   vcn_id              = oci_core_vcn.okevcn.id
   #optional
@@ -36,7 +36,7 @@ resource "oci_containerengine_node_pool" "oke_node_pool" {
   #Required
   cluster_id         = oci_containerengine_cluster.mtdrworkshop_cluster.id
   compartment_id     = var.ociCompartmentOcid
-  kubernetes_version = "v1.20.8"
+  kubernetes_version = "v1.23.4"
   name               = "Pool"
   #  node_shape="VM.Standard2.4"
   #  node_shape         = "VM.Standard.B2.1"