SORMAS-Foundation#2859 - escape possible javascript content from charts

Author: barnabartha

sormas-ui/src/main/java/de/symeda/sormas/ui/dashboard/campaigns/CampaignDashboardDiagramComponent.java

@@ -7,6 +7,7 @@
 import de.symeda.sormas.api.i18n.Captions;
 import de.symeda.sormas.api.i18n.I18nProperties;
 import de.symeda.sormas.ui.highcharts.HighChart;
+import org.apache.commons.text.StringEscapeUtils;
 
 import java.math.BigDecimal;
 import java.math.RoundingMode;