avro

Bump org.mockito:mockito-core from 5.13.0 to 5.15.2 in /lang/java (#3282)

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.13.0 to 5.15.2.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v5.13.0...v5.15.2)

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