update stable milestone for KMSv2 to v1.29

Signed-off-by: Anish Ramasekar <[email protected]>

Author: aramase

keps/sig-auth/3299-kms-v2-improvements/kep.yaml

@@ -15,12 +15,12 @@ approvers:
 replaces:
   - "/keps/sig-auth/3130-kms-observability"
 stage: beta
-latest-milestone: "v1.27"
+latest-milestone: "v1.28"
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
   alpha: "v1.25"
   beta: "v1.27"
-  stable: "v1.28"
+  stable: "v1.29"
 feature-gates:
   - name: KMSv2
     components: