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/gnostic.go

@@ -219,8 +219,8 @@ func (k *Ref) FromGnostic(g string) error {
 // Caveats:
 //
 // - gnostic v2 documents treats zero as unspecified for numerical fields of
-//CommonValidations fields such as Maximum, Minimum, MaximumItems, etc.
-//There will always be data loss if one of the values of these fields is set to zero.
+// CommonValidations fields such as Maximum, Minimum, MaximumItems, etc.
+// There will always be data loss if one of the values of these fields is set to zero.
 //
 // Returns:
 //
@@ -1263,6 +1263,8 @@ func (k *Schema) FromGnostic(g *openapi_v2.Schema) (ok bool, err error) {
 			k.AdditionalProperties.Allows = g.AdditionalProperties.GetBoolean()
 		} else {
 			k.AdditionalProperties.Schema = &Schema{}
+			k.AdditionalProperties.Allows = true
+
 			if nok, err := k.AdditionalProperties.Schema.FromGnostic(g.AdditionalProperties.GetSchema()); err != nil {
 				return false, err
 			} else if !nok {