chore(nginx): update upstream registry and use latest version

Author: uwe-mayer

ingress-nginx/plugindefinition.yaml

@@ -6,15 +6,15 @@ kind: PluginDefinition
 metadata:
   name: ingress-nginx
 spec:
-  version: 1.2.4
+  version: 1.2.5
   displayName: Ingress NGINX
   description: Ingress NGINX controller for Kubernetes
   docMarkDownUrl: https://raw.githubusercontent.com/cloudoperators/greenhouse-extensions/main/ingress-nginx/README.md
   icon: https://raw.githubusercontent.com/cloudoperators/greenhouse-extensions/main/ingress-nginx/logo.png
   helmChart:
     name: ingress-nginx
-    repository: https://kubernetes.github.io/ingress-nginx
-    version: 4.12.4
+    repository: oci://registry.k8s.io/ingress-nginx/charts
+    version: v4.14.0
   options:
     - name: controller.service.loadBalancerIP
       description: IP address of the associated load balancer.