PawelBichalski

- Fix PHP Deprecated: Return type of ... should either be compatible with Iterator errors

**Environment (please complete the following information):** - PHP IMAP version: 3.1.0 - PHP Version: 8.0 - Type of execution: CLI **Describe the bug** Mailbox::getMailsInfo throw Argument 1 passed to PhpImap\Imap::fetch_overview()...