Bump to Buildah v1.27.0

As the title says.

Vendor Buildah v1.27.0 into Podman in preparation for Buildah v4.2

[No New Tests Needed]

Signed-off-by: tomsweeneyredhat <tsweeney@redhat.com>

vendor/github.com/containers/buildah/util.go

@@ -187,7 +187,7 @@ func IsContainer(id string, store storage.Store) (bool, error) {
 	// Assuming that if the stateFile exists, that this is a Buildah
 	// container.
 	if _, err = os.Stat(filepath.Join(cdir, stateFile)); err != nil {
-		if os.IsNotExist(err) {
+		if errors.Is(err, os.ErrNotExist) {
 			return false, nil
 		}
 		return false, err