Change milestone of mount fsgroup proposal

Author: gnufied

keps/sig-storage/2317-fsgroup-on-mount/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: "v1.21"
+latest-milestone: "v1.22"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
-  alpha: "v1.21"
+  alpha: "v1.22"
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled
 feature-gates: