Log Message:
glib2: update to 2.60.6

Overview of changes in GLib 2.60.6
==================================

* Fix various bugs with use of the `GKeyfileSettingsBackend` within flatpaks \ 
(!984, !985, #1825)

* Bugs fixed:
 - !993 Backport !984, !985 keyfile/portal fixes to glib-2-60

Overview of changes in GLib 2.60.5
==================================

* Fix implicit use of the `GKeyfileSettingsBackend` (#1822)

* Fix opening a URI using the ‘Open URI’ portal (!968)

* Bugs fixed:
 - !910 Backport !909 “D-Bus auth mechanism improvements” to glib-2-60
 - !949 Backport !945 “Avoid overrunning stack at the end of the varargs.” \ 
to glib-2-60
 - !956 Backport !954 “Fix the ISO 15924 code for Manichaean” to glib-2-60
 - !958 gthread: fix minor errno problem in GCond
 - !969 Backport !968 ”Fix typo in request handle” to glib-2-60
 - !977 Backport !974 “Ensure that the keyfile settings backend exists” to \ 
glib-2-60