Bump nl.jqno.equalsverifier:equalsverifier from 4.0.7 to 4.0.9

Bumps [nl.jqno.equalsverifier:equalsverifier](https://github.com/jqno/equalsverifier) from 4.0.7 to 4.0.9.
- [Release notes](https://github.com/jqno/equalsverifier/releases)
- [Changelog](https://github.com/jqno/equalsverifier/blob/main/CHANGELOG.md)
- [Commits](jqno/equalsverifier@equalsverifier-4.0.7...equalsverifier-4.0.9)

---
updated-dependencies:
- dependency-name: nl.jqno.equalsverifier:equalsverifier
  dependency-version: 4.0.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -347,7 +347,7 @@ dependencies {
 	// needed for syslog4j. Used in java test modules and JsonServerServlet subclasses in tests
 	// but not in SDK code proper.
 	testImplementation('net.java.dev.jna:jna:3.4.0')
-	testImplementation("nl.jqno.equalsverifier:equalsverifier:4.0.7")
+	testImplementation("nl.jqno.equalsverifier:equalsverifier:4.1")
 	// this is OOOOOOLD. But that probably means updating java_common
 	testImplementation('org.eclipse.jetty.aggregate:jetty-all:7.0.0.v20091005')
 	testImplementation('org.hamcrest:hamcrest:3.0')