build(deps): bump mockito from 5.19.0 to 5.20.0 (#264)

Bumps `mockito` from 5.19.0 to 5.20.0.

Updates `org.mockito:mockito-core` from 5.19.0 to 5.20.0
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.19.0...v5.20.0)

Updates `org.mockito:mockito-junit-jupiter` from 5.19.0 to 5.20.0
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.19.0...v5.20.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-version: 5.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.mockito:mockito-junit-jupiter
  dependency-version: 5.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -17,7 +17,7 @@ checkstyle = "8.44"
 pmd = "7.14.0"
 jacoco = "0.8.13"
 # Testing
-mockito = "5.19.0"
+mockito = "5.20.0"
 junit-jupiter = "5.13.4"
 junit-platform = "1.13.4"