fix(argo-workflows): missing artifact GC rbac (#1680)

According to the documentation:
https://argoproj.github.io/argo-workflows/walk-through/artifacts/#artifact-garbage-collection

Signed-off-by: danmx <daniel@iziourov.info>

Signed-off-by: danmx <daniel@iziourov.info>
Co-authored-by: Jason Meridth <jmeridth@gmail.com>

charts/argo-workflows/templates/controller/workflow-role.yaml

@@ -42,6 +42,7 @@ rules:
       - argoproj.io
     resources:
       - workflowtasksets
+      - workflowartifactgctasks
     verbs:
       - list
       - watch
@@ -49,6 +50,7 @@ rules:
       - argoproj.io
     resources:
       - workflowtasksets/status
+      - workflowartifactgctasks/status
     verbs:
       - patch
   {{- end }}