Mark RunAsGroup as GA

Author: ehashman

keps/sig-node/213-run-as-group/kep.yaml

@@ -15,8 +15,8 @@ prr-approvers:
   - "@johnbelamaric"
 editor: TBD
 creation-date: 2017-06-21
-last-updated: 2021-02-04
-status: implementable
+last-updated: 2021-04-08
+status: implemented
 stage: "stable"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.