Maintenance release for ILIAS 9.
More information about the release at https://docu.ilias.de/go/pg/217959_35. This release contains security fixes. For more information, please visit the security blog at https://docu.ilias.de/go/blog/15821/876. It is recommended to update your software to the latest version.
Please use only the files ILIAS-9.13.tar.gz or ILIAS-9.13.zip for download and installing ILIAS and ignore the files offered by GitHub (called 'Source Code') to prevent problems with composer.