Update go dependencies

vendor/k8s.io/kube-openapi/pkg/util/proto/openapi.go

@@ -58,6 +58,14 @@ type SchemaVisitor interface {
 	VisitReference(Reference)
 }
 
+// SchemaVisitorArbitrary is an additional visitor interface which handles
+// arbitrary types. For backwards compatibility, it's a separate interface
+// which is checked for at runtime.
+type SchemaVisitorArbitrary interface {
+	SchemaVisitor
+	VisitArbitrary(*Arbitrary)
+}
+
 // Schema is the base definition of an openapi type.
 type Schema interface {
 	// Giving a visitor here will let you visit the actual type.
@@ -242,6 +250,23 @@ func (p *Primitive) GetName() string {
 	return fmt.Sprintf("%s (%s)", p.Type, p.Format)
 }
 
+// Arbitrary is a value of any type (primitive, object or array)
+type Arbitrary struct {
+	BaseSchema
+}
+
+var _ Schema = &Arbitrary{}
+
+func (a *Arbitrary) Accept(v SchemaVisitor) {
+	if visitor, ok := v.(SchemaVisitorArbitrary); ok {
+		visitor.VisitArbitrary(a)
+	}
+}
+
+func (a *Arbitrary) GetName() string {
+	return "Arbitrary value (primitive, object or array)"
+}
+
 // Reference implementation depends on the type of document.
 type Reference interface {
 	Schema