KDE: Update KDE Plasma to 5.27.11

KDE Plasma 5.27.11, Bugfix Release for March

Wednesday, 6 March 2024. Today KDE releases a bugfix update to KDE
Plasma 5, versioned 5.27.11.

Plasma 5.27 was released in February 2023 with many feature refinements
and new modules to complete the desktop experience.

The bugfixes are typically small but important and include:

 * Plasma Browser Integration: 🍒🍒Download Job: Truncate excessively
   long URLs.
 * KWin: Tabbox: match Shift+Backtab against Shift+Tab.
 * Powerdevil: Kbd backlight: Fix double brightness restore on
   LidOpen-resume.

Announcement:	https://kde.org/announcements/plasma/5/5.27.11/
Full Changelog:	https://kde.org/announcements/changelogs/plasma/5/5.27.10-5.27.11