update icewind/smb to 3.4.0

apps/files_external/3rdparty/.gitignore

apps/files_external/3rdparty/composer.json

apps/files_external/3rdparty/composer.lock

apps/files_external/3rdparty/composer/ClassLoader.php

apps/files_external/3rdparty/composer/InstalledVersions.php

apps/files_external/3rdparty/composer/autoload_classmap.php

apps/files_external/3rdparty/composer/autoload_psr4.php

apps/files_external/3rdparty/composer/autoload_real.php

apps/files_external/3rdparty/composer/autoload_static.php

apps/files_external/3rdparty/composer/installed.json

apps/files_external/3rdparty/composer/installed.php

apps/files_external/3rdparty/composer/platform_check.php

apps/files_external/3rdparty/icewind/smb/.gitignore

apps/files_external/3rdparty/icewind/smb/README.md

apps/files_external/3rdparty/icewind/smb/composer.json

apps/files_external/3rdparty/icewind/smb/src/ACL.php

...iles_external/3rdparty/icewind/smb/src/AbstractServer.php

...files_external/3rdparty/icewind/smb/src/AbstractShare.php

...files_external/3rdparty/icewind/smb/src/AnonymousAuth.php

apps/files_external/3rdparty/icewind/smb/src/BasicAuth.php