Apply suggestions from code review

Author: Kevin Hannon

keps/sig-node/3085-pod-conditions-for-starting-completition-of-sandbox-creation/kep.yaml

@@ -26,11 +26,11 @@ stage: alpha
 # The most recent milestone for which work toward delivery of this KEP has been
 # done. This can be the current (upcoming) milestone, if it is being actively
 # worked on.
-latest-milestone: "v1.29"
+latest-milestone: "v1.28"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
-  alpha: "v1.29"
+  alpha: "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