KDE: Update KDE Plasma Desktop 6 to 6.0.2

Changes in 6.0.1:

• KWin: Fix confined pointer being able to escape the surface.
• Fix kicker close on click away.
• Show panels on entering edit mode and "add widgets".

Changes in 6.0.2:

• Fix sending window to all desktops.
• Folder Model: Handle invalid URL in desktop file.
• Fix panels being set to floating by upgrades.

Announcement for 6.0.1: https://kde.org/announcements/plasma/6/6.0.1/
Announcement for 6.0.2: https://kde.org/announcements/plasma/6/6.0.2/