chore(deps): update helm release traefik to v20

Author: renovate[bot]

cluster/apps/networking/traefik/helm-release.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: traefik
-      version: 12.0.4
+      version: 20.5.2
       sourceRef:
         kind: HelmRepository
         name: traefik-charts

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: v12.0.4
+    tag: v20.5.2
   ignore: |
     # exclude all
     /*