Fix kep.yaml for cronjob KEP to reflect latest

Signed-off-by: Davanum Srinivas <[email protected]>

Author: dims

keps/sig-apps/19-Graduate-CronJob-to-Stable/kep.yaml

@@ -31,7 +31,7 @@ stage: stable
 # 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: "v1.21"
+latest-milestone: "v1.22"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone: