bump github.com/moby/buildkit to v0.13.0 (#351)

* bump github.com/moby/buildkit to v0.13.0

Signed-off-by: Nianyu Shen <nianyu@spectrocloud.com>

* fix: update dep usage based on newer version

Signed-off-by: Nianyu Shen <nianyu@spectrocloud.com>

* remove empty line

Signed-off-by: Nianyu Shen <nianyu@spectrocloud.com>

* ci: bump golang to 1.21.x

* Bump moby

* debug

---------

Signed-off-by: Nianyu Shen <nianyu@spectrocloud.com>
Co-authored-by: Nianyu Shen <nianyu@spectrocloud.com>

vendor/github.com/google/go-containerregistry/pkg/v1/mutate/index.go

@@ -17,7 +17,6 @@ package mutate
 import (
 	"encoding/json"
 	"fmt"
-	"strings"
 
 	"github.com/google/go-containerregistry/pkg/logs"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
@@ -71,6 +70,7 @@ type index struct {
 	imageMap    map[v1.Hash]v1.Image
 	indexMap    map[v1.Hash]v1.ImageIndex
 	layerMap    map[v1.Hash]v1.Layer
+	subject     *v1.Descriptor
 }
 
 var _ v1.ImageIndex = (*index)(nil)
@@ -131,14 +131,8 @@ func (i *index) compute() error {
 
 	manifest.Manifests = manifests
 
-	// With OCI media types, this should not be set, see discussion:
-	// https://github.com/opencontainers/image-spec/pull/795
 	if i.mediaType != nil {
-		if strings.Contains(string(*i.mediaType), types.OCIVendorPrefix) {
-			manifest.MediaType = ""
-		} else if strings.Contains(string(*i.mediaType), types.DockerVendorPrefix) {
-			manifest.MediaType = *i.mediaType
-		}
+		manifest.MediaType = *i.mediaType
 	}
 
 	if i.annotations != nil {
@@ -149,6 +143,7 @@ func (i *index) compute() error {
 			manifest.Annotations[k] = v
 		}
 	}
+	manifest.Subject = i.subject
 
 	i.manifest = manifest
 	i.computed = true