Use versionless Qt cmake target

This makes it easier to build against both Qt5 and Qt6

GIT_SILENT

src/CMakeLists.txt

@@ -55,12 +55,12 @@ qt5_add_dbus_interface(xdg_desktop_portal_kde_SRCS ../data/org.freedesktop.Accou
 add_executable(xdg-desktop-portal-kde ${xdg_desktop_portal_kde_SRCS})
 
 target_link_libraries(xdg-desktop-portal-kde
-    Qt5::Core
-    Qt5::DBus
-    Qt5::Concurrent
-    Qt5::PrintSupport
-    Qt5::QuickWidgets
-    Qt5::Widgets
+    Qt::Core
+    Qt::DBus
+    Qt::Concurrent
+    Qt::PrintSupport
+    Qt::QuickWidgets
+    Qt::Widgets
     KF5::CoreAddons
     KF5::ConfigCore
     KF5::Declarative

src/kirigami-filepicker/CMakeLists.txt

@@ -12,8 +12,8 @@ set(filepicker_lib_SRCS
 add_library(KirigamiFilepicker STATIC ${filepicker_lib_SRCS})
 target_include_directories(KirigamiFilepicker PRIVATE declarative)
 target_link_libraries(KirigamiFilepicker
-    Qt5::Quick
-    Qt5::Qml
+    Qt::Quick
+    Qt::Qml
     KF5::I18n
     KF5::KIOCore
     KF5::KIOFileWidgets