Overview of changes in GLib 2.66.6
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* Fix various instances within GLib where `g_memdup()` was vulnerable to a
  silent integer truncation and heap overflow problem (discovered by
  Kevin Backhouse, work by Philip Withnall) (#2319)

* Bugs fixed:
 - !1927 Backport !1926 “Add g_memdup2()” to glib-2-66