Merge pull request #5414 from liggitt/740-beta

KEP-740: update to beta for 1.34

Author: k8s-ci-robot

keps/sig-auth/740-service-account-external-signing/kep.yaml

@@ -15,7 +15,7 @@ approvers:
   - "@liggitt"
   - "@enj"
 
-stage: alpha
+stage: beta
 
 latest-milestone: "v1.34"