KEP-4222: Bump alpha target and latest-milestone to 1.31.

Author: benluddy

keps/sig-api-machinery/4222-cbor-serializer/kep.yaml

@@ -22,11 +22,11 @@ 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: "v1.30"
+latest-milestone: "v1.31"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
-  alpha: "v1.30"
+  alpha: "v1.31"
   beta: ""
   stable: ""