[glibmm] Created tag 2.68.2

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '2.68.2' was created.

Tagger: Kjell Ahlstedt <kjellahlstedt gmail com>
Date: 1633507600 +0200

    2.68.2

Changes since the last tag '2.68.1':

Kjell Ahlstedt (9):
      Glib::ustring: Remove extraneous GLIBMM_API
      Gio::ListModel::get_object(): Don't try to cast to Glib::Object
      handle-built-files.py: Specify file encoding on generated files
      Gio::AppInfo::get_all(): Use a local TypeTraits in ListHandler
      Use GLib from the main branch in subproject
      Declare some copy assignment operators deleted (=delete)
      Glib::wrap_register_init(): Don't use g_quark_from_static_string()
      CI: Copy .gitlab-ci.yml from the master branch
      2.68.2

talisein (1):
      fileenumerator.hg: Remove refreturn to avoid memory leak