[Vendor] update go-swagger v0.21.0 -> v0.25.0 (#12670)

* Update go-swagger

* vendor

vendor/github.com/go-openapi/spec/contact_info.go

@@ -14,11 +14,41 @@
 
 package spec
 
+import (
+	"encoding/json"
+
+	"github.com/go-openapi/swag"
+)
+
 // ContactInfo contact information for the exposed API.
 //
 // For more information: http://goo.gl/8us55a#contactObject
 type ContactInfo struct {
+	ContactInfoProps
+	VendorExtensible
+}
+
+type ContactInfoProps struct {
 	Name  string `json:"name,omitempty"`
 	URL   string `json:"url,omitempty"`
 	Email string `json:"email,omitempty"`
 }
+
+func (c *ContactInfo) UnmarshalJSON(data []byte) error {
+	if err := json.Unmarshal(data, &c.ContactInfoProps); err != nil {
+		return err
+	}
+	return json.Unmarshal(data, &c.VendorExtensible)
+}
+
+func (c ContactInfo) MarshalJSON() ([]byte, error) {
+	b1, err := json.Marshal(c.ContactInfoProps)
+	if err != nil {
+		return nil, err
+	}
+	b2, err := json.Marshal(c.VendorExtensible)
+	if err != nil {
+		return nil, err
+	}
+	return swag.ConcatJSON(b1, b2), nil
+}