Fix kep.yaml for coordinated leader election

Author: Jefftree

keps/sig-api-machinery/4355-coordinated-leader-election/kep.yaml

@@ -6,13 +6,13 @@ authors:
 owning-sig: sig-api-machinery
 participating-sigs:
   - sig-cluster-lifecycle
-status: provisional
+status: implementable
 creation-date: 2023-14-05
 reviewers:
-  - "@logicalhan"
-  - "@liggitt"
+  - "@wojtek-t"
+  - "@sttts"
 approvers:
-  - "@deads2k"
+  - "@sttts"
 see-also:
   - "keps/sig-api-machinery/1965-kube-apiserver-identity"
 stage: alpha