Upgrade dependency to go-containerregistry third-party library

By doing so it will fix issues met when mixing source/remote registry

Close #808

vendor/github.com/google/go-containerregistry/pkg/authn/basic.go

@@ -14,11 +14,6 @@
 
 package authn
 
-import (
-	"encoding/base64"
-	"fmt"
-)
-
 // Basic implements Authenticator for basic authentication.
 type Basic struct {
 	Username string
@@ -26,8 +21,9 @@ type Basic struct {
 }
 
 // Authorization implements Authenticator.
-func (b *Basic) Authorization() (string, error) {
-	delimited := fmt.Sprintf("%s:%s", b.Username, b.Password)
-	encoded := base64.StdEncoding.EncodeToString([]byte(delimited))
-	return fmt.Sprintf("Basic %s", encoded), nil
+func (b *Basic) Authorization() (*AuthConfig, error) {
+	return &AuthConfig{
+		Username: b.Username,
+		Password: b.Password,
+	}, nil
 }