update dependencies

src/main/java/com/jFxKasse/controller/MainWindowController.java

@@ -416,7 +416,8 @@ public class MainWindowController {
 			desktop.open(file);
 		}
 		else {
-			Runtime.getRuntime().exec("xdg-open " + Main.filepath);
+			ProcessBuilder pb = new ProcessBuilder("xdg-open ".split("\\s+"));
+			pb.start();
 		}
 	}