x11/sfwbar: upgrade to 1.0.b13

ChangeLog: https://github.com/LBCrion/sfwbar/releases

• Implement bluez module
• Add WidgetId() expression function, assign id's to all widgets
• Add Eval action
• Add SwitcherEvent action. Support backwards switching.
• Allow config to modify widgets. Implement ClearWidget action.

PR: 274664
Reported by: tino.engel@mail.de (maintainer)