keps/sig-testing: declare 2539 beta in v1.22

Author: spiffxp

keps/sig-testing/2539-continuously-deploy-k8s-prow/README.md

@@ -147,7 +147,10 @@ Before enabling Alpha phase, this will be announced:
 - Via email to the entire [email protected] group
 
 ## Implementation History
-
+- 2021-02-23 - KEP [authored](https://github.com/kubernetes/enhancements/pull/2540)
+- 2021-03-31 - KEP [moved to implementable](https://github.com/kubernetes/enhancements/pull/2553)
+- 2021-04-01 - KEP implemented at alpha ([announcement](https://groups.google.com/g/kubernetes-dev/c/nke9PYaGTnY/m/nrQ6hVDfCgAJ))
+- 2021-08-16 - Retroactively declared beta
 
 ## Alternatives
 

keps/sig-testing/2539-continuously-deploy-k8s-prow/kep.yaml

@@ -1,21 +1,21 @@
 title: Continuously Deploy K8s Prow
 kep-number: 2539
 authors:
-  - "@chaodaiG"
+- chaodaiG
 owning-sig: sig-testing
 participating-sigs:
-  - sig-testing
-  - sig-release
-status: implementable
+- sig-testing
+- sig-release
+status: implemented
 creation-date: 2021-02-23
+last-updated: 2021-08-16
 reviewers:
-  - "@spiffxp" # Sig-testing chair
-  - "@justaugustus" # Sig-release chair
-  - "@alvaroaleman" # Prow approver
+- spiffxp       # sig-testing chair
+- justaugustus  # sig-release chair
+- alvaroaleman  # prow approver
 approvers:
-  - "@spiffxp" # Sig-testing chair
-  - "@justaugustus" # Sig-release chair
-  - "@alvaroaleman" # Prow approver
-
-latest-milestone: "0.0"
-stage: "alpha"
+- spiffxp       # sig-testing chair
+- justaugustus  # sig-release chair
+- alvaroaleman  # prow approver
+latest-milestone: v1.21
+stage: beta