community/xfce4-cpugraph-plugin: upgrade to 1.2.6
https://docs.xfce.org/panel-plugins/xfce4-cpugraph-plugin/start
- Fix translations not showing in the GUI
- Don't save some defaults to configuration files
- Fix visibility of the associated-command configuration
- Update configure.ac.in syntax
- Translation Updates: Basque, Chinese (China), Croatian, Danish, Hebrew, Indonesian, Occitan (post 1500), Portuguese (Brazil), Slovenian, Swedish