Upgrade to HSQLDB 2.5.2
diff --git a/pom.xml b/pom.xml
index 01b626a..4325f18 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,7 +48,7 @@
         <easymock.version>4.0.2</easymock.version>
         <ehcache3.version>3.8.1</ehcache3.version>
         <jcache.version>1.1.1</jcache.version>
-        <hsqldb.version>2.5.1</hsqldb.version>
+        <hsqldb.version>2.5.2</hsqldb.version>
         <htmlunit.version>2.47.1</htmlunit.version>
         <jackson.version>2.11.4</jackson.version>
         <jaxb.version>2.3.2</jaxb.version>