Excerpt from the header of qtbase-everywhere-src-6.5.1/src/corelib/mimetypes/mime/packages/freedesktop.org.xml,
which Qt6Core.dll embeds (compressed) as its MIME type database:

The freedesktop.org shared MIME database (this file) was created by merging
several existing MIME databases (all released under the GNU GPL).

It comes with ABSOLUTELY NO WARRANTY, to the extent permitted by law. You may
redistribute copies of freedesktop.org.xml under the terms of the GNU General
Public License version 2 or later. For more information about these matters,
see the file named COPYING.

The latest version is available from:

	http://www.freedesktop.org/wiki/Software/shared-mime-info/

To extend this database, users and applications should create additional
XML files in the 'packages' directory and run the update-mime-database
command to generate the output files.
