fix(argo-workflows): avoid empty namespace in role binding when singleNamespace is true (#2858)

Signed-off-by: Aljoscha Poertner <aljoscha.poertner@hellmann.com>

charts/argo-workflows/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: v3.5.10
 name: argo-workflows
 description: A Helm chart for Argo Workflows
 type: application
-version: 0.41.13
+version: 0.41.14
 icon: https://argo-workflows.readthedocs.io/en/stable/assets/logo.png
 home: https://github.com/argoproj/argo-helm
 sources:
@@ -16,5 +16,5 @@ annotations:
     fingerprint: 2B8F22F57260EFA67BE1C5824B11F800CD9D2252
     url: https://argoproj.github.io/argo-helm/pgp_keys.asc
   artifacthub.io/changes: |
-    - kind: changed
-      description: Bump argo-workflows to v3.5.10
+    - kind: fixed
+      description: Avoid empty namespace in role binding when singleNamespace is true

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

@@ -17,7 +17,9 @@ roleRef:
 subjects:
   - kind: ServiceAccount
     name: {{ $.Values.workflow.serviceAccount.name }}
-    namespace: {{ $namespace }}
+    {{- with $namespace }}
+    namespace: {{ . }}
+    {{- end }}
   {{- range $.Values.workflow.rbac.serviceAccounts }}
   - kind: ServiceAccount
     name: {{ .name }}