Change default value for `irsa_namespace_service_accounts` to reflect changes from v0.33

[gaelayo]

Description

Since v0.33, karpenter recommends to stop using the karpenter namespace and deploy karpenter inside the kube-system instead. This change has been reflected during the introduction of #3031 , but was not applied to the value irsa_namespace_service_accounts, which is still ["karpenter:karpenter"] by default, when I think it should be switched to ["kube-system:karpenter"].

[bryantbiggs]

that would be a breaking change and one we would need to consider in the next major release

[github-actions[bot]]

This issue has been automatically marked as stale because it has been open 30 days with no activity. Remove stale label or comment or this issue will be closed in 10 days

[github-actions[bot]]

This issue was automatically closed because of stale in 10 days

[github-actions[bot]]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.