Bump org.assertj:assertj-core from 3.27.3 to 3.27.6 in /service (#373)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.27.3 to 3.27.6.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.3...assertj-build-3.27.6)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-version: 3.27.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

service/build.gradle

@@ -37,7 +37,7 @@ dependencies {
     implementation 'com.rabbitmq.jms:rabbitmq-jms:3.5.0'
 
     testImplementation 'org.mockito:mockito-core:5.20.0'
-    testImplementation 'org.assertj:assertj-core:3.27.3'
+    testImplementation 'org.assertj:assertj-core:3.27.6'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'io.rest-assured:rest-assured:5.5.6'
     testImplementation 'io.rest-assured:json-path:5.5.6'