fix(helm): update chart kubernetes-dashboard to 7.0.3 (#866)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

bootstrap/templates/addons/kubernetes-dashboard/app/helmrelease.yaml.j2

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: kubernetes-dashboard
-      version: 7.0.2
+      version: 7.0.3
       sourceRef:
         kind: HelmRepository
         name: kubernetes-dashboard