Bump org.mockito:mockito-core from 5.5.0 to 5.6.0

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.5.0 to 5.6.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.5.0...v5.6.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

libs/pom.xml

@@ -28,7 +28,7 @@
     <spring-data.version>3.1.4</spring-data.version>
     <jetty.version>11.0.16</jetty.version>
     <jackson.version>2.15.2</jackson.version>
-    <mockito.version>5.5.0</mockito.version>
+    <mockito.version>5.6.0</mockito.version>
     <skipTests>false</skipTests>
     <skipUnits>${skipTests}</skipUnits>
     <isPrivate>true</isPrivate>