KDE: Update KDE Plasma Desktop to 5.24.5 (Bugfix release for May)

KDE Plasma 5.24.5, Bugfix Release for May

Tuesday, 3 May 2022. Today KDE releases a bugfix update to KDE Plasma 5,
versioned 5.24.5.

Plasma 5.24 was released in February 2022 with many feature refinements
and new modules to complete the desktop experience.

This release adds a month's worth of new translations and fixes from
KDE's contributors. The bugfixes are typically small but important and
include:

• Discover Flatpak backend: Improve stability of different sources integration.
• Plasma Audio Volume Control: SpeakerTest: Fix subwoofer test.
• xdg-desktop-portal-kde: Fix saving file dialog view options.

Full Changelog:
https://kde.org/announcements/changelogs/plasma/5/5.24.4-5.24.5

(cherry picked from commit f2936caa2b4e530fd43d4210dcd1ca3d43b4785e)