(v4.5.x): Bump nl.jqno.equalsverifier:equalsverifier from 3.19.4 to 4.0

Bumps [nl.jqno.equalsverifier:equalsverifier](https://github.com/jqno/equalsverifier) from 3.19.4 to 4.0.
- [Release notes](https://github.com/jqno/equalsverifier/releases)
- [Changelog](https://github.com/jqno/equalsverifier/blob/main/CHANGELOG.md)
- [Commits](jqno/equalsverifier@equalsverifier-3.19.4...equalsverifier-4.0)

---
updated-dependencies:
- dependency-name: nl.jqno.equalsverifier:equalsverifier
  dependency-version: '4.0'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build.gradle

@@ -25,7 +25,7 @@ buildscript {
 		// Test Dependencies
 		springCloudContractVersion = "4.3.0-RC1"
 		javaHamcrestVersion = "2.0.0.0"
-		equalsVerifierVersion = "3.19.4"
+		equalsVerifierVersion = "4.0"
 		findbugsVersion = "3.0.1u2"
 		wiremockStandaloneVersion = "3.0.1"