Client->createFolder() fails when folder name contains double quotes

[bartnv]

Describe the bug
Client->createFolder() fails with a TypeError on the return value when folder name contains double quotes. The IMAP server (in my case Dovecot 2.3.13) creates the folder succesfully, but createFolder() hits this error trying to return the result:

PHP Fatal error:  Uncaught TypeError: Webklex\PHPIMAP\Client::createFolder(): Return value must be of type Webklex\PHPIMAP\Folder, null returned in /{redacted}/vendor/webklex/php-imap/src/Client.php:579

Used config
Nothing relevant.

Code to Reproduce
$client->createFolder('test"test');

Expected behavior
The function returns the Folder class of the created folder.

Screenshots
Not applicable.

Desktop / Server (please complete the following information):

• OS: Debian 11
• PHP: 8.1
• Version: 4.1.2
• Provider: Dovecot 2.3.13 on local server

Additional context
None.