refs sparkfabrik-innovation-team/board#3833: Update user access condition in config.yaml.tftpl to check for operate_at_root_group_level

Author: Stevesibilia

files/config.yaml.tftpl

@@ -2,7 +2,7 @@ ci_access:
   groups:
     - id: ${root_namespace}
 
-%{~ if gitlab_agent_grant_user_access_to_root_namespace }
+%{~ if operate_at_root_group_level }
 user_access:
   access_as:
     agent: {}