operator+/- is disabled for QFlags in qt6

libdiscover/resources/ResourcesModel.cpp

@@ -87,7 +87,7 @@ void ResourcesModel::init(bool load)
     m_updateAction = new QAction(this);
     m_updateAction->setIcon(QIcon::fromTheme(QStringLiteral("system-software-update")));
     m_updateAction->setText(i18nc("@action Checks the Internet for updates", "Check for Updates"));
-    m_updateAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
+    m_updateAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_R));
     connect(this, &ResourcesModel::fetchingChanged, m_updateAction, [this](bool fetching) {
         m_updateAction->setEnabled(!fetching);
         m_fetchingUpdatesProgress.reevaluate();