Bump libcompose and sync dependencies

vendor/github.com/mattn/go-shellwords/util_windows.go

@@ -1,17 +0,0 @@
-package shellwords
-
-import (
-	"errors"
-	"os"
-	"os/exec"
-	"strings"
-)
-
-func shellRun(line string) (string, error) {
-	shell := os.Getenv("COMSPEC")
-	b, err := exec.Command(shell, "/c", line).Output()
-	if err != nil {
-		return "", errors.New(err.Error() + ":" + string(b))
-	}
-	return strings.TrimSpace(string(b)), nil
-}