Update lego

vendor/github.com/Azure/go-autorest/autorest/version.go

@@ -2,17 +2,28 @@ package autorest
 
 import (
 	"fmt"
+	"strings"
+	"sync"
 )
 
 const (
-	major        = "7"
-	minor        = "0"
-	patch        = "0"
-	tag          = ""
-	semVerFormat = "%s.%s.%s%s"
+	major = 7
+	minor = 3
+	patch = 1
+	tag   = ""
 )
 
+var versionLock sync.Once
+var version string
+
 // Version returns the semantic version (see http://semver.org).
 func Version() string {
-	return fmt.Sprintf(semVerFormat, major, minor, patch, tag)
+	versionLock.Do(func() {
+		version = fmt.Sprintf("v%d.%d.%d", major, minor, patch)
+
+		if trimmed := strings.TrimPrefix(tag, "-"); trimmed != "" {
+			version = fmt.Sprintf("%s-%s", version, trimmed)
+		}
+	})
+	return version
 }