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/validation/spec/info.go

@@ -19,6 +19,8 @@ import (
 	"strings"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 )
 
 // Extensions vendor specific extensions
@@ -87,6 +89,31 @@ func (e Extensions) GetObject(key string, out interface{}) error {
 	return nil
 }
 
+func (e Extensions) sanitize() {
+	for k := range e {
+		if !isExtensionKey(k) {
+			delete(e, k)
+		}
+	}
+}
+
+func (e Extensions) sanitizeWithExtra() (extra map[string]any) {
+	for k, v := range e {
+		if !isExtensionKey(k) {
+			if extra == nil {
+				extra = make(map[string]any)
+			}
+			extra[k] = v
+			delete(e, k)
+		}
+	}
+	return extra
+}
+
+func isExtensionKey(k string) bool {
+	return len(k) > 1 && (k[0] == 'x' || k[0] == 'X') && k[1] == '-'
+}
+
 // VendorExtensible composition block.
 type VendorExtensible struct {
 	Extensions Extensions
@@ -167,8 +194,29 @@ func (i Info) MarshalJSON() ([]byte, error) {
 
 // UnmarshalJSON marshal this from JSON
 func (i *Info) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshaling {
+		return jsonv2.Unmarshal(data, i)
+	}
+
 	if err := json.Unmarshal(data, &i.InfoProps); err != nil {
 		return err
 	}
 	return json.Unmarshal(data, &i.VendorExtensible)
 }
+
+func (i *Info) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		Extensions
+		InfoProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	x.Extensions.sanitize()
+	if len(x.Extensions) == 0 {
+		x.Extensions = nil
+	}
+	i.VendorExtensible.Extensions = x.Extensions
+	i.InfoProps = x.InfoProps
+	return nil
+}