Bump github.com/containers/storage from 1.15.2 to 1.15.3

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.15.2 to 1.15.3.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.15.2...v1.15.3)

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

vendor/github.com/containers/storage/drivers/overlay/overlay.go

@@ -676,9 +676,6 @@ func (d *Driver) getLower(parent string) (string, error) {
 		parentLowers := strings.Split(string(parentLower), ":")
 		lowers = append(lowers, parentLowers...)
 	}
-	if len(lowers) > maxDepth {
-		return "", errors.New("max depth exceeded")
-	}
 	return strings.Join(lowers, ":"), nil
 }
 
@@ -828,6 +825,10 @@ func (d *Driver) get(id string, disableShifting bool, options graphdriver.MountO
 	if err != nil && !os.IsNotExist(err) {
 		return "", err
 	}
+	splitLowers := strings.Split(string(lowers), ":")
+	if len(splitLowers) > maxDepth {
+		return "", errors.New("max depth exceeded")
+	}
 
 	// absLowers is the list of lowers as absolute paths, which works well with additional stores.
 	absLowers := []string{}
@@ -851,7 +852,7 @@ func (d *Driver) get(id string, disableShifting bool, options graphdriver.MountO
 
 	// For each lower, resolve its path, and append it and any additional diffN
 	// directories to the lowers list.
-	for _, l := range strings.Split(string(lowers), ":") {
+	for _, l := range splitLowers {
 		if l == "" {
 			continue
 		}