rebase: bump github.com/kubernetes-csi/external-snapshotter/client/v6

Bumps [github.com/kubernetes-csi/external-snapshotter/client/v6](https://github.com/kubernetes-csi/external-snapshotter) from 6.1.0 to 6.2.0.
- [Release notes](https://github.com/kubernetes-csi/external-snapshotter/releases)
- [Commits](https://github.com/kubernetes-csi/external-snapshotter/compare/v6.1.0...v6.2.0)

---
updated-dependencies:
- dependency-name: github.com/kubernetes-csi/external-snapshotter/client/v6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/k8s.io/kube-openapi/pkg/internal/flags.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2022 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.
+*/
+
+package internal
+
+// Used by tests to selectively disable experimental JSON unmarshaler
+var UseOptimizedJSONUnmarshaling bool = true