deps: update osbuild/images to 246b718310ea

Current main.
246b718310

vendor/github.com/containers/image/v5/docker/wwwauthenticate.go

@@ -3,6 +3,7 @@ package docker
 // Based on github.com/docker/distribution/registry/client/auth/authchallenge.go, primarily stripping unnecessary dependencies.
 
 import (
+	"fmt"
 	"net/http"
 	"strings"
 )
@@ -70,6 +71,18 @@ func parseAuthHeader(header http.Header) []challenge {
 	return challenges
 }
 
+// parseAuthScope parses an authentication scope string of the form `$resource:$remote:$actions`
+func parseAuthScope(scopeStr string) (*authScope, error) {
+	if parts := strings.Split(scopeStr, ":"); len(parts) == 3 {
+		return &authScope{
+			resourceType: parts[0],
+			remoteName:   parts[1],
+			actions:      parts[2],
+		}, nil
+	}
+	return nil, fmt.Errorf("error parsing auth scope: '%s'", scopeStr)
+}
+
 // NOTE: This is not a fully compliant parser per RFC 7235:
 // Most notably it does not support more than one challenge within a single header
 // Some of the whitespace parsing also seems noncompliant.
@@ -136,7 +149,7 @@ func expectTokenOrQuoted(s string) (value string, rest string) {
 			p := make([]byte, len(s)-1)
 			j := copy(p, s[:i])
 			escape := true
-			for i = i + 1; i < len(s); i++ {
+			for i++; i < len(s); i++ {
 				b := s[i]
 				switch {
 				case escape: