Bump org.mockito:mockito-core from 5.4.0 to 5.6.0

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.4.0 to 5.6.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.4.0...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] <support@github.com>

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ junit-jupiter-params = { module = "org.junit.jupiter:junit-jupiter-params", vers
 junit-jupiter-engine = { module = "org.junit.jupiter:junit-jupiter-engine", version = "5.9.3" }
 junit-jupiter-vintage = { module = "org.junit.vintage:junit-vintage-engine", version = "5.9.3" }
 
-mockito-core = { module = "org.mockito:mockito-core", version = "5.4.0" }
+mockito-core = { module = "org.mockito:mockito-core", version = "5.6.0" }
 mockito-junitjupiter = { module = "org.mockito:mockito-junit-jupiter", version = "5.4.0" }
 
 equalsverifier = { module = "nl.jqno.equalsverifier:equalsverifier", version = "3.15.1" }