Merge pull request #3846 from MikeSpreitzer/apf-ga-128

KEP-1040: Push GA to release 1.28

Author: k8s-ci-robot

keps/sig-api-machinery/1040-priority-and-fairness/kep.yaml

@@ -33,7 +33,7 @@ latest-milestone: "v1.27"
 milestone:
   alpha: "v1.18"
   beta: "v1.20"
-  stable: "v1.27"
+  stable: "v1.28"
 
 # The following PRR answers are required at alpha release.
 # List the feature gate name and the components for which it must be enabled.