fix(reloader): use OCI helm repo

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

bootstrap/templates/kubernetes/flux/repositories/helm/stakater.yaml.j2

@@ -5,5 +5,6 @@ metadata:
   name: stakater
   namespace: flux-system
 spec:
-  interval: 1h
-  url: https://stakater.github.io/stakater-charts
+  type: oci
+  interval: 5m
+  url: oci://ghcr.io/stakater/charts