Log Message:
Update glib2 to 2.66.4

Overview of changes in GLib 2.66.4
==================================

* Fix some issues in parsing floating point seconds in `GDateTime`
  (!1791, !1797)

* Fix some issues in handling invalid UTF-8 when parsing for `GDate` (!1788)

* Bugs fixed:
 - #2264 GPtrArray might call qsort() with NULL data
 - Backport !1771 macos: fix frexpl checks in cross-compilation to glib-2-66
 - Backport !1788 gdate: Validate input as UTF-8 before parsing to glib-2-66
 - Backport !1791 gdatetime: Disallow NAN as a number of seconds in a GDateTime \ 
to glib-2-66
 - Backport !1794 gio-tool-info: Prevent criticals if mount options are not \ 
available to glib-2-66
 - Backport !1797 gdatetime: Improve ISO 8601 parsing to avoid floating point \ 
checks to glib-2-66