Log Message:
mkvtoolnix: updated to 88.0

Version 88.0 "All I Know" 2024-10-19

New features and enhancements

* mkvmerge, MKVToolNix GUI's chapter editor: added support for reading
  chapters from PotPlayer bookmark files.

Bug fixes

* configure: fixed setting `HAVE_QTDBUS` properly if the QtDbus module is
  found.
* mkvmerge: MP4 reader: mkvmerge will no longer warn when multiple identical
  FourCCs are present within the same track headers.
* mkvmerge man page: removed the wrong statement that an attachment's MIME
  type must be set before use of the `--attach-file` & `--attach-file-once`
  options. If not given, mkvmerge auto-detects the MIME type.