fix(openstack): Fix psalm issue with updated openstack version

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/Files/ObjectStore/SwiftV2CachingAuthService.php

@@ -25,11 +25,14 @@ declare(strict_types=1);
  */
 namespace OC\Files\ObjectStore;
 
+use OpenStack\Common\Auth\Token;
 use OpenStack\Identity\v2\Service;
 
 class SwiftV2CachingAuthService extends Service {
 	public function authenticate(array $options = []): array {
-		if (!empty($options['v2cachedToken'])) {
+		if (isset($options['v2cachedToken'], $options['v2serviceUrl'])
+			&& $options['v2cachedToken'] instanceof Token
+			&& is_string($options['v2serviceUrl'])) {
 			return [$options['v2cachedToken'], $options['v2serviceUrl']];
 		} else {
 			return parent::authenticate($options);