libvnck 3.42.0
- vnck-urgency-monitor: don't hide deprecations
- ci: add debian stable build
- port from GdkPixbuf to CdkPixbuf
- Fix [-Wheader-guard] warnings
- vnckprop:
- Fix cppcheck [uninitvar] warning
- make sure 'prop' variable is freed in 'wm_state_set' function
- update translations