Bump hsqldb from 2.2.6 to 2.7.1

Bumps hsqldb from 2.2.6 to 2.7.1.

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

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -249,7 +249,7 @@
             <dependency>
                 <groupId>org.hsqldb</groupId>
                 <artifactId>hsqldb</artifactId>
-                <version>2.2.6</version>
+                <version>2.7.1</version>
             </dependency>
             <dependency>
                 <groupId>com.vaadin</groupId>