fix: update renovate crd regexManager for more coverage

Signed-off-by: Devin Buhl <devin@buhl.casa>

cluster/crds/system-upgrade-controller/kustomization.yaml

@@ -2,5 +2,5 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  # renovate: registryUrl=https://github.com/rancher/system-upgrade-controller
+  # renovate: datasource=docker image=rancher/system-upgrade-controller
   - https://github.com/rancher/system-upgrade-controller/releases/download/v0.9.1/crd.yaml