Log Message:
libxfce4ui: update to 4.18.1

Change log:

4.18.1 (2023-01-05)
======
- XfceFileNameInput - wrap error message (Issue #60)
- xfce4-about: Removed excess square brackets
- Revert "XfceShortcutsGrabber: Detect auto-repeat key press"
- Translation Updates:
  Hebrew, Russian, Swedish