(v4.0.0): Bump nl.jqno.equalsverifier:equalsverifier from 3.14.2 to 3.15

Bumps [nl.jqno.equalsverifier:equalsverifier](https://github.com/jqno/equalsverifier) from 3.14.2 to 3.15.
- [Release notes](https://github.com/jqno/equalsverifier/releases)
- [Changelog](https://github.com/jqno/equalsverifier/blob/main/CHANGELOG.md)
- [Commits](jqno/equalsverifier@equalsverifier-3.14.2...equalsverifier-3.15)

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

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

build.gradle

@@ -25,7 +25,7 @@ buildscript {
 		// Test Dependencies
 		springCloudContractVersion = "4.0.3"
 		javaHamcrestVersion = "2.0.0.0"
-		equalsVerifierVersion = "3.14.2"
+		equalsVerifierVersion = "3.15"
 		findbugsVersion = "3.0.1"
 
 		// Static Analysis