Update go.mod and vendor

vendor/github.com/moby/buildkit/solver/llbsolver/file/unpack.go

@@ -1,61 +0,0 @@
-package file
-
-import (
-	"archive/tar"
-	"context"
-	"os"
-	"time"
-
-	"github.com/containerd/continuity/fs"
-	"github.com/docker/docker/pkg/archive"
-	"github.com/docker/docker/pkg/chrootarchive"
-	copy "github.com/tonistiigi/fsutil/copy"
-)
-
-func unpack(ctx context.Context, srcRoot string, src string, destRoot string, dest string, ch copy.Chowner, tm *time.Time) (bool, error) {
-	src, err := fs.RootPath(srcRoot, src)
-	if err != nil {
-		return false, err
-	}
-	if !isArchivePath(src) {
-		return false, nil
-	}
-
-	dest, err = fs.RootPath(destRoot, dest)
-	if err != nil {
-		return false, err
-	}
-	if err := copy.MkdirAll(dest, 0755, ch, tm); err != nil {
-		return false, err
-	}
-
-	file, err := os.Open(src)
-	if err != nil {
-		return false, err
-	}
-	defer file.Close()
-
-	return true, chrootarchive.Untar(file, dest, nil)
-}
-
-func isArchivePath(path string) bool {
-	fi, err := os.Lstat(path)
-	if err != nil {
-		return false
-	}
-	if fi.Mode()&os.ModeType != 0 {
-		return false
-	}
-	file, err := os.Open(path)
-	if err != nil {
-		return false
-	}
-	defer file.Close()
-	rdr, err := archive.DecompressStream(file)
-	if err != nil {
-		return false
-	}
-	r := tar.NewReader(rdr)
-	_, err = r.Next()
-	return err == nil
-}