chore(k8s): vendor agent-sandbox v0.4.6 extensions

Signed-off-by: Roshni Malani <rmalani@nvidia.com>

Author: rmalani-nv

deploy/helm/openshell/README.md

@@ -14,7 +14,8 @@ This chart deploys the OpenShell gateway into a Kubernetes cluster. It is publis
 The Kubernetes Agent Sandbox CRDs and controller must be installed on the cluster before deploying OpenShell. Install them with:
 
 ```shell
-kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/latest/download/manifest.yaml
+kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/v0.4.6/manifest.yaml
+kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/v0.4.6/extensions.yaml
 ```
 
 ## Install on Kubernetes

deploy/helm/openshell/README.md.gotmpl

@@ -14,7 +14,8 @@ This chart deploys the OpenShell gateway into a Kubernetes cluster. It is publis
 The Kubernetes Agent Sandbox CRDs and controller must be installed on the cluster before deploying OpenShell. Install them with:
 
 ```shell
-kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/latest/download/manifest.yaml
+kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/v0.4.6/manifest.yaml
+kubectl apply -f https://github.com/kubernetes-sigs/agent-sandbox/releases/download/v0.4.6/extensions.yaml
 ```
 
 ## Install on Kubernetes