fix(deps): update dependency org.hsqldb:hsqldb to v2.7.1

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.hsqldb:hsqldb (source)	2.5.2 -> 2.7.1

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[vlsi]

This release breaks compatibility with Java 8:

Uncaught Exception >java.lang.UnsupportedClassVersionError: org/hsqldb/jdbc/JDBCDriver has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 in thread Thread[StandardJMeterEngine,5,main]. See log file for details.

[vlsi]

https://sourceforge.net/p/hsqldb/news/2021/04/maven-releases-of-version-260/

There's jdk8 classifier: https://repo1.maven.org/maven2/org/hsqldb/hsqldb/2.7.1/

[vlsi]

I've added jdk8 classifier in a980912