Overview of changes in GLib 2.78.3, 2023-12-06
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* Fix a crash-causing regression in xdgmime (#3191, work by Philip Withnall)

* Bugs fixed:
  - #3191 Crash in __gio_xdg_cache_mime_type_subclass (Philip Withnall)
  - !3747 Backport !3742 “xdgmime: Update to upstream commit c2c814d4051f232” to
    glib-2-78