auto-pruner cronjob gets recreated for adding/removing annotation/label to the namespace

Steps to Reproduce

• Edit config CR with below values for pruner part

  pruner:
  keep: 2
  resources:
  - taskrun
  - pipelinerun
  schedule: '*/2 * * * *'
  

•  Observe the cronjob with the prefix tekton-resource-pruner- getting created in the namespace openshift-pipelines
• Wait for some time and add(or remove) label/annotation (any label or annotation which is not related to auto pruning config) from any namespace

Expected Behaviour

The cronjob observed in step number 2 should be present

Observed Behaviour

The cronjob observed in step number 2 gets deleted and a new cronjob gets created with the prefix tekton-resource-pruner-