Drop function is not working in promtail configuration

[shreymarkandey-materialplus]

promtail:
  enabled: true
  #
  # Enable Promtail service monitoring
  # serviceMonitor:
  #   enabled: true
  #
  # User defined pipeline stages
  pipelineStages:
    - docker: {}
    - drop:
        source: namespace
        expression: "kube-.*"

Updating it still kube-system logs are showing in loki & if I replace it with any other NS then also loki is showing it
Bascially when we apply this configuration its not getting updated inside promtail container

[jizusun]

I fixed the problem with the help here: https://stackoverflow.com/a/75472714