fix(traefik): don't set xrobots header by default (#3183)

* fix(traefik): don't set xrobots header by default

* Update Chart.yaml

charts/stable/traefik/Chart.yaml

@@ -22,7 +22,7 @@ sources:
 - https://github.com/traefik/traefik-helm-chart
 - https://traefik.io/
 type: application
-version: 12.0.21
+version: 12.0.22
 annotations:
   truecharts.org/catagories: |
     - network

charts/stable/traefik/templates/middlewares/tc-headers.yaml

@@ -27,7 +27,6 @@ spec:
     customRequestHeaders:
       X-Forwarded-Proto: https
     customResponseHeaders:
-      X-Robots-Tag: none
       server: ""
     forceSTSHeader: true
     referrerPolicy: same-origin
@@ -60,5 +59,4 @@ spec:
     customRequestHeaders:
       X-Forwarded-Proto: "https"
     customResponseHeaders:
-      X-Robots-Tag: 'none'
       server: ''