Log Message:
xfce4-conf: update to 4.18.3

4.18.3 (2023-10-31)
======
- cache: Fix overwritten error
- cache: Fix uncached value

4.18.2 (2023-10-17)
======
- Cache property-not-found responses in XfconfCache
- Don't reset scheduled save timer on every write
- xfconf-query: Sort channel list (-l or -m alone)
- docs: Fix transfer type of xfconf_list_channels()
- docs: Add clarification about bindings