* gnu/packages/kde-plasma.scm (kwayland-integration): Update to 6.1.2. [inputs]: Remove kguiaddons, kidletime, kwindowsystem, and kwayland; add kguiaddons-5, kidletime-5, kwindowsystem-5, kwayland-5, and plasma-wayland-protocols. Change-Id: Ie4c5aff268e6572c75da2838fbe1faaebf50f152