Use versionless Qt cmake target

This makes it easier to build against both Qt5 and Qt6

GIT_SILENT

CMakeLists.txt

@@ -64,8 +64,8 @@ add_executable( kmenuedit ${kmenuedit_KDEINIT_SRCS})
 target_compile_definitions(kmenuedit PRIVATE -DPROJECT_VERSION="${PROJECT_VERSION}")
 
 target_link_libraries(kmenuedit
-    Qt5::DBus
-    Qt5::Xml
+    Qt::DBus
+    Qt::Xml
     KF5::DBusAddons
     KF5::GlobalAccel
     KF5::I18n

kconf_update/CMakeLists.txt

 add_executable(kmenuedit_globalaccel globalaccel.cpp ../globalaccel.cpp)
 
-target_link_libraries(kmenuedit_globalaccel Qt5::DBus KF5::ConfigCore KF5::GlobalAccel KF5::I18n KF5::Service)
+target_link_libraries(kmenuedit_globalaccel Qt::DBus KF5::ConfigCore KF5::GlobalAccel KF5::I18n KF5::Service)
 
 install(TARGETS kmenuedit_globalaccel DESTINATION ${KDE_INSTALL_LIBDIR}/kconf_update_bin)