update rbd migration feature milestone in KEP to 1.27

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

Author: humblec

keps/sig-storage/2923-csi-migration-ceph-rbd/README.md

@@ -85,6 +85,6 @@ Major milestones for Ceph RBD in-tree plugin CSI migration:
 
 - 1.23
   - Ceph RBD CSI migration to Alpha
-- 1.26
+- 1.27
   - Ceph RBD CSI migration to Beta, off by default
 

keps/sig-storage/2923-csi-migration-ceph-rbd/kep.yaml

@@ -25,12 +25,12 @@ stage: beta
 # 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: "v1.26"
+latest-milestone: "v1.27"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
   alpha: "v1.23"
-  beta: "v1.26"
+  beta: "v1.27"
 
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled