go mod tidy to vendor more dependencies

Author: carreter

e2e/templates/agent/serviceaccount.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: konnectivity-agent
+  namespace: kube-system
+  labels:
+    kubernetes.io/cluster-service: "true"

go.mod

@@ -2,8 +2,6 @@ module sigs.k8s.io/apiserver-network-proxy
 
 go 1.22.3
 
-toolchain go1.22.4
-
 require (
 	github.com/google/uuid v1.6.0
 	github.com/prometheus/client_golang v1.19.1