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