Bump net.javacrumbs.json-unit:json-unit-assertj in /java

Bumps [net.javacrumbs.json-unit:json-unit-assertj](https://github.com/lukas-krecan/JsonUnit) from 3.5.0 to 4.0.0.
- [Changelog](https://github.com/lukas-krecan/JsonUnit/blob/master/RELEASES.md)
- [Commits](lukas-krecan/JsonUnit@json-unit-parent-3.5.0...json-unit-parent-4.0.0)

---
updated-dependencies:
- dependency-name: net.javacrumbs.json-unit:json-unit-assertj
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

java/pom.xml

@@ -186,7 +186,7 @@
         <wiremock.version>2.35.2</wiremock.version>
         <assertj.version>3.26.3</assertj.version>
         <approvaltests.version>24.9.0</approvaltests.version>
-        <jsonunit.version>3.5.0</jsonunit.version>
+        <jsonunit.version>4.0.0</jsonunit.version>
         <checkstyle.version>10.20.1</checkstyle.version>
         <sleeper.system.test.short.id/>
         <sleeper.system.test.vpc.id/>