Mark as implementable

Author: liggitt

keps/sig-architecture/3935-oldest-node-newest-control-plane/README.md

@@ -51,13 +51,13 @@ checklist items _must_ be updated for the enhancement to be released.
 
 Items marked with (R) are required *prior to targeting to a milestone / release*.
 
-- [ ] (R) Enhancement issue in release milestone, which links to KEP dir in [kubernetes/enhancements] (not the initial KEP PR)
-- [ ] (R) KEP approvers have approved the KEP status as `implementable`
+- [x] (R) Enhancement issue in release milestone, which links to KEP dir in [kubernetes/enhancements] (not the initial KEP PR)
+- [x] (R) KEP approvers have approved the KEP status as `implementable`
 - [x] (R) Design details are appropriately documented
 - [x] (R) Test plan is in place, giving consideration to SIG Architecture and SIG Testing input (including test refactors)
 - [x] (R) Graduation criteria is in place
 - [x] (R) Production readiness review completed
-- [ ] (R) Production readiness review approved
+- [x] (R) Production readiness review approved
 - [x] "Implementation History" section is up-to-date for milestone
 - [ ] User-facing documentation has been created in [kubernetes/website], for publication to [kubernetes.io]
 - [x] Supporting documentation—e.g., additional design documents, links to mailing list discussions/SIG meetings, relevant PRs/issues, release notes

keps/sig-architecture/3935-oldest-node-newest-control-plane/kep.yaml

@@ -8,7 +8,7 @@ participating-sigs:
   - sig-cluster-lifecycle
   - sig-network
   - sig-node
-status: provisional
+status: implementable
 creation-date: 2023-04-03
 reviewers:
   - "@soltysh" # sig-apps