prepare KEP for bound beta and rootca ga

Author: zshihang

keps/sig-auth/1205-bound-service-account-tokens/README.md

@@ -412,9 +412,9 @@ are properly reloading tokens by:
 
 ##### Beta->GA
 
-- [ ] In use by multiple distributions
-- [ ] Approved by PRR and scalability
-- [ ] Any known bugs fixed
+- [x] In use by multiple distributions
+- [x] Approved by PRR and scalability
+- [x] Any known bugs fixed
 
 #### BoundServiceAccountTokenVolume
 
@@ -443,7 +443,7 @@ are properly reloading tokens by:
 
 - [x] TokenRequest/TokenRequestProjection GA
 
-- [ ] RootCAConfigMap GA
+- [x] RootCAConfigMap GA
 
 ##### Beta -> GA Graduation
 

keps/sig-auth/1205-bound-service-account-tokens/kep.yaml

@@ -11,10 +11,10 @@ reviewers:
 approvers:
   - "@liggitt"
 creation-date: 2019-08-06
-last-updated: 2020-09-23
-status: implementable
+last-updated: 2021-01-13
+status: implemented
 stage: beta
-latest-milestone: "v1.20"
+latest-milestone: "v1.21"
 milestone:
   alpha: "v1.13"
   beta: "v1.21"