Merge pull request #64262 from jessfraz/SECURITY_CONTACTS

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

add PST to main SECURITY_CONTACTS as formality

Add the Product Security Team as the security contacts for the main
repository and they can use the OWNERS files in each subsystem/dir to find
the correct owners.

cc @liggitt @cjcullen @tallclair @philips

```release-note
NONE
```

closes #64265

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

Kubernetes-commit: 5da925ad4fd070e687dc5255c177d5e7d542edd7

vendor/k8s.io/client-go/pkg/apis/clientauthentication/v1beta1/doc.go

@@ -0,0 +1,23 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+// +k8s:conversion-gen=k8s.io/client-go/pkg/apis/clientauthentication
+// +k8s:openapi-gen=true
+// +k8s:defaulter-gen=TypeMeta
+
+// +groupName=client.authentication.k8s.io
+package v1beta1