Fixed compiling under new Qt versions

updatersettingswidget.cpp

@@ -8,7 +8,7 @@ UpdaterSettingsWidget::UpdaterSettingsWidget(ZeiterfassungSettings &settings, QW
     m_settings(settings)
 {
     auto layout = new QFormLayout(this);
-    layout->setMargin(0);
+    layout->setContentsMargins({});
 
     m_lineEdit = new QLineEdit(m_settings.url().toString(), this);
     layout->addRow(tr("Updater url:"), m_lineEdit);