feat: allow Critical annotations to be injected into ingresses

Dokku needs this in order to construct certain rules that aren't supported by ingress-nginx annotations.

plugins/scheduler-k3s/templates/helm-config/ingress-nginx.yaml

@@ -4,6 +4,7 @@ controller:
     enabled: true
   config:
     access-log-path: /var/log/nginx/access.log
+    annotations-risk-level: Critical
     error-log-path: /var/log/nginx/error.log
     log-format-escape-json: "true"
   extraVolumeMounts: