[pom] Update hsqldb to 2.3.5
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
- <version>2.3.4</version> <!-- Version 2.4.0 requires jdk8 -->
+ <version>2.3.5</version> <!-- Version 2.4.0 requires jdk8 -->
</dependency>
<!-- Test dependencies -->
