Update direct dependencies where possible

vendor/github.com/mattermost/mattermost-server/model/saml.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	USER_AUTH_SERVICE_SAML      = "saml"
+	USER_AUTH_SERVICE_SAML_TEXT = "With SAML"
+)
+
+type SamlAuthRequest struct {
+	Base64AuthRequest string
+	URL               string
+	RelayState        string
+}
+
+type SamlCertificateStatus struct {
+	IdpCertificateFile    bool `json:"idp_certificate_file"`
+	PrivateKeyFile        bool `json:"private_key_file"`
+	PublicCertificateFile bool `json:"public_certificate_file"`
+}
+
+func (s *SamlCertificateStatus) ToJson() string {
+	b, _ := json.Marshal(s)
+	return string(b)
+}
+
+func SamlCertificateStatusFromJson(data io.Reader) *SamlCertificateStatus {
+	var status *SamlCertificateStatus
+	json.NewDecoder(data).Decode(&status)
+	return status
+}