build(deps-dev): bump nl.jqno.equalsverifier:equalsverifier (#2606)

Bumps [nl.jqno.equalsverifier:equalsverifier](https://github.com/jqno/equalsverifier) from 4.1.1 to 4.2.
- [Release notes](https://github.com/jqno/equalsverifier/releases)
- [Changelog](https://github.com/jqno/equalsverifier/blob/main/CHANGELOG.md)
- [Commits](jqno/equalsverifier@equalsverifier-4.1.1...equalsverifier-4.2)

---
updated-dependencies:
- dependency-name: nl.jqno.equalsverifier:equalsverifier
  dependency-version: '4.2'
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

testcontainers-spring-boot-parent/pom.xml

@@ -18,7 +18,7 @@
         <spring.boot.version>3.5.6</spring.boot.version>
         <spring.cloud.version>2025.0.0</spring.cloud.version>
         <spring.cloud.gcp.version>7.3.2</spring.cloud.gcp.version>
-        <equalsverifier.version>4.1.1</equalsverifier.version>
+        <equalsverifier.version>4.2</equalsverifier.version>
         <junit-jupiter.version>6.0.0</junit-jupiter.version>
         <spring.cloud.azure.version>6.0.0</spring.cloud.azure.version>
     </properties>