W1018 11:20:11.121896 1 feature_gate.go:237] Setting GA feature gate TTLAfterFinished=true. It will be removed in a future release.
This needs to be removed from both the Puppet-provisioned bootstrap file and the live config on all clusters and control nodes.
It seems they remove it in 1.25:
https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#other-cleanup-or-flake-4
https://github.com/kubernetes/kubernetes/pull/109435/files#diff-71e3b98f9a6bbf5b8421e26a7ba0c079f397cd8d49abacdad943c66a4f44f03dL216