[pom] Update hsqldb to 2.4.1

Author: hazendaz

pom.xml

@@ -100,7 +100,7 @@
     <dependency>
       <groupId>org.hsqldb</groupId>
       <artifactId>hsqldb</artifactId>
-      <version>2.3.5</version> <!-- Version 2.4.0 required jdk8 -->
+      <version>2.4.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>