Add docs for Structured Authn GA

Signed-off-by: Anish Ramasekar <anish.ramasekar@gmail.com>

Author: aramase

content/en/docs/reference/access-authn-authz/authentication.md

@@ -380,7 +380,7 @@ command line arguments, and use the configuration file instead.
 # CAUTION: this is an example configuration.
 #          Do not use this for your own cluster!
 #
-apiVersion: apiserver.config.k8s.io/v1beta1
+apiVersion: apiserver.config.k8s.io/v1
 kind: AuthenticationConfiguration
 # list of authenticators to authenticate Kubernetes users using JWT compliant tokens.
 # the maximum number of allowed authenticators is 64.
@@ -513,7 +513,7 @@ jwt:
   {{< tabs name="example_configuration" >}}
   {{% tab name="Valid token" %}}
   ```yaml
-  apiVersion: apiserver.config.k8s.io/v1beta1
+  apiVersion: apiserver.config.k8s.io/v1
   kind: AuthenticationConfiguration
   jwt:
   - issuer:
@@ -574,7 +574,7 @@ jwt:
   {{% /tab %}}
   {{% tab name="Fails claim validation" %}}
   ```yaml
-  apiVersion: apiserver.config.k8s.io/v1beta1
+  apiVersion: apiserver.config.k8s.io/v1
   kind: AuthenticationConfiguration
   jwt:
   - issuer:
@@ -625,7 +625,7 @@ jwt:
   {{% /tab %}}
   {{% tab name="Fails user validation" %}}
   ```yaml
-  apiVersion: apiserver.config.k8s.io/v1beta1
+  apiVersion: apiserver.config.k8s.io/v1
   kind: AuthenticationConfiguration
   jwt:
   - issuer:
@@ -1095,7 +1095,7 @@ A sample authentication configuration file is below:
 # CAUTION: this is an example configuration.
 #          Do not use this for your own cluster!
 #
-apiVersion: apiserver.config.k8s.io/v1beta1
+apiVersion: apiserver.config.k8s.io/v1
 kind: AuthenticationConfiguration
 anonymous:
   enabled: true

content/en/docs/reference/command-line-tools-reference/feature-gates/StructuredAuthenticationConfiguration.md

@@ -6,13 +6,17 @@ _build:
   render: false
 
 stages:
-  - stage: alpha 
+  - stage: alpha
     defaultValue: false
     fromVersion: "1.29"
     toVersion: "1.29"
   - stage: beta
     defaultValue: true
-    fromVersion: "1.30"  
+    fromVersion: "1.30"
+    toVersion: "1.33"
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.34"
 ---
-Enable [structured authentication configuration](/docs/reference/access-authn-authz/authentication/#configuring-the-api-server) 
+Enable [structured authentication configuration](/docs/reference/access-authn-authz/authentication/#configuring-the-api-server)
 for the API server.