Bump github.com/containers/buildah from 1.8.4 to 1.11.4

Bumps [github.com/containers/buildah](https://github.com/containers/buildah) from 1.8.4 to 1.11.4.
- [Release notes](https://github.com/containers/buildah/releases)
- [Changelog](https://github.com/containers/buildah/blob/master/CHANGELOG.md)
- [Commits](https://github.com/containers/buildah/compare/v1.8.4...v1.11.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

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

@@ -9,9 +9,13 @@ import (
 	"strings"
 )
 
-func shellRun(line string) (string, error) {
+func shellRun(line, dir string) (string, error) {
 	shell := os.Getenv("COMSPEC")
-	b, err := exec.Command(shell, "/c", line).Output()
+	cmd := exec.Command(shell, "/c", line)
+	if dir != "" {
+		cmd.Dir = dir
+	}
+	b, err := cmd.Output()
 	if err != nil {
 		if eerr, ok := err.(*exec.ExitError); ok {
 			b = eerr.Stderr