update openshift supported versions for next release (#8489)

Author: kvalliyurnatt

README.md

@@ -18,7 +18,7 @@ Current features:
 Supported versions:
 
 *  Kubernetes 1.28-1.32
-*  OpenShift 4.12-4.17
+*  OpenShift 4.13-4.18
 *  Elasticsearch, Kibana, APM Server: 6.8+, 7.1+, 8+
 *  Enterprise Search: 7.7+, 8+
 *  Beats: 7.0+, 8+

docs/supported-versions.asciidoc

@@ -1,7 +1,7 @@
 ECK is compatible with:
 
 * Kubernetes 1.28-1.32
-* OpenShift 4.12-4.17
+* OpenShift 4.13-4.18
 * Google Kubernetes Engine (GKE), Azure Kubernetes Service (AKS), and Amazon Elastic Kubernetes Service (EKS)
 * Helm: 3.2.0+
 * Elasticsearch, Kibana, APM Server: 6.8+, 7.1+, 8+

hack/operatorhub/templates/csv.tpl

@@ -286,7 +286,7 @@ spec:
 
     * Kubernetes 1.28-1.32
 
-    * OpenShift 4.12-4.17
+    * OpenShift 4.13-4.18
 
     * Google Kubernetes Engine (GKE), Azure Kubernetes Service (AKS), and Amazon Elastic Kubernetes Service (EKS)