Unnecessary creationTimestamp: null in config-demo pod template

[brianredbeard]

Description

The pod template metadata includes creationTimestamp: null which is unnecessary and may cause validation warnings. Kubernetes auto-populates this field.

Location

https://github.com/validatedpatterns/multicloud-gitops/blob/main/charts/all/config-demo/templates/config-demo-deployment.yaml#L15

template:
  metadata:
    creationTimestamp: null

Expected Behavior

Remove the creationTimestamp: null line.