Log Message:
xfce4-genmon-plugin: update to 4.2.0

4.2.0 (2023/04/16)
==================
- Add shell script to migrate settings to xfconf
- Fix GDK_Critical
- Fixed deskbar support. Issue #8
- Add Update Now menu option to right-click menu
- build: Add GLib requirement
- build: Fix autotools warnings
- Use "logo-icon-name" instead of "logo" in about dialog
- ***Migrate settings to xfconf
- Remove unused variable
- Fix intltool lock file bug in make distcheck
- Remove closing of standard file descriptors in the child process
- Update COPYING
- Add <css> tag support
- fixed .genmon_label and -gtk-icon transform bugs
- Fix code indentation and readalility
- Add support for single and multi-row panel layout options
- Added support for <css></css> XML tag. Changed default progressbar \ 
width to 4px
- automake: Modernize following other projects
- autoconf: Some updates
- Update `.gitignore`
- Add missing comments to code functions
- Fix indentation
- Translation updates