chore(deps): update helm release traefik to v10.21.1 (#363)

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

cluster/crds/traefik/crds.yaml

@@ -9,7 +9,7 @@ spec:
   url: https://github.com/traefik/traefik-helm-chart.git
   ref:
     # renovate: registryUrl=https://helm.traefik.io/traefik chart=traefik
-    tag: v10.20.1
+    tag: 10.21.1
   ignore: |
     # exclude all
     /*