devel/jsong-lib: update to 1.6.2
JSON-GLib 1.6.2 (stable) [https://gitlab.gnome.org/GNOME/json-glib/-/tags/1.6.2]:
• Fix build reproducibility [!33, Alexander Kanavin]
• #26 - Fix parsing of UTF-16 surrogate pairs [James Westman]
• #56 - Ignore UTF-8 BOM [Jan-Michael Brummer]