deps: Migrate to rancher/kuberlr-kubectl

Instead of using a hardcoded kubectl version as we did with
kubewarden/kubectl image, migrate to `kuberlr-kubectl`.

kuberlr-kubectl image bundles several kubectl binaries that correspond
with the Kubernetes versions supported by Rancher. This simplifies
airgap installations.

In addition, kuberlr-kubectl will download a matching kubectl binary
if the Kubernetes API server is out of the Kubernetes version skew
policy of the kubectl binaries it bundles. This ensures we always
have a correct kubectl binary.

Signed-off-by: Víctor Cuadrado Juan <[email protected]>

Author: viccuad

charts/kubewarden-controller/values.yaml

@@ -204,9 +204,9 @@ image:
 preDeleteJob:
   image:
     # The registry is defined in the global.cattle.systemDefaultRegistry value
-    # kubectl image to be used in the pre-delete helm hook
-    repository: "kubewarden/kubectl"
-    tag: v1.31.0
+    # kuberlr-kubectl image to be used in the pre-delete helm hook.
+    repository: "rancher/kuberlr-kubectl"
+    tag: v3.0.0
 # kubewarden-controller deployment settings:
 podAnnotations: {}
 nodeSelector: {}