set status dashboard service to hidden

Reviewed-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-authored-by: tischrei <tino.schreiber@t-systems.com>
Co-committed-by: tischrei <tino.schreiber@t-systems.com>

otc_metadata/data/services.yaml

@@ -1842,7 +1842,7 @@ services:
     service_title: Status Dashboard
     service_type: sd
     service_uri: status-dashboard/umn
-    environment: public
+    environment: hidden
     teams:
       - name: docs-eco-rw
         permission: write