devel/glib20: update to 2.74.6 release (+)

* Bugs fixed:
  - !3239 Backport !3237 “Fix safe_wspawnve #define” to glib-2-74

* Translation updates:
  - Georgian (Ekaterine Papava)
  - German (Tim Sabsch)

Changelog:	https://gitlab.gnome.org/GNOME/glib/-/blob/2.74.6/NEWS

Sponsored by:	Serenity Cybersecurity, LLC