Bump nl.jqno.equalsverifier:equalsverifier from 3.15.5 to 3.15.6

Bumps [nl.jqno.equalsverifier:equalsverifier](https://github.com/jqno/equalsverifier) from 3.15.5 to 3.15.6.
- [Release notes](https://github.com/jqno/equalsverifier/releases)
- [Changelog](https://github.com/jqno/equalsverifier/blob/main/CHANGELOG.md)
- [Commits](jqno/equalsverifier@equalsverifier-3.15.5...equalsverifier-3.15.6)

---
updated-dependencies:
- dependency-name: nl.jqno.equalsverifier:equalsverifier
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -84,7 +84,7 @@
     <!-- test dependencies -->
     <version.assertj>3.24.2</version.assertj>
     <version.archunit>1.2.1</version.archunit>
-    <version.equalsverifier>3.15.5</version.equalsverifier>
+    <version.equalsverifier>3.15.6</version.equalsverifier>
     <version.openpojo>0.9.1</version.openpojo>
     <version.jacoco>0.8.11</version.jacoco>
     <version.slf4j-test>3.0.1</version.slf4j-test>