KEP-3331: update kep latest milestone to v1.32

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

Author: aramase

keps/sig-auth/3331-structured-authentication-configuration/kep.yaml

@@ -12,11 +12,10 @@ approvers:
 creation-date: "2022-06-02"
 status: implementable
 stage: beta
-latest-milestone: "v1.31"
+latest-milestone: "v1.32"
 milestone:
   alpha: "v1.29"
   beta: "v1.30"
-  stable: "v1.32"
 feature-gates:
 - name: StructuredAuthenticationConfiguration
   components: