Bump hsqldb from 2.5.1 to 2.7.1

Bumps hsqldb from 2.5.1 to 2.7.1.

---
updated-dependencies:
- dependency-name: org.hsqldb:hsqldb
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 5be36ce..22bc04f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -78,7 +78,7 @@
         <createSources>false</createSources>
         <!-- common JDBC driver versions -->
         <derby.version>10.14.2.0</derby.version>
-        <hsqldb.version>2.5.1</hsqldb.version>
+        <hsqldb.version>2.7.1</hsqldb.version>
         <mysql.connector.version>5.1.49</mysql.connector.version>
         <mariadb.connector.version>2.7.2</mariadb.connector.version>
         <postgresql.connector.version>42.5.0</postgresql.connector.version>