Bump org.mockito:mockito-junit-jupiter from 5.18.0 to 5.20.0 (#343)

Bumps [org.mockito:mockito-junit-jupiter](https://github.com/mockito/mockito) from 5.18.0 to 5.20.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.18.0...v5.20.0)

---
updated-dependencies:
- 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]

build.gradle.kts

@@ -34,7 +34,7 @@ repositories {
 val creekVersion = "0.4.3"
 val junitVersion = "5.13.4"
 val junitPioneerVersion = "2.3.0"
-val mockitoVersion = "5.18.0"
+val mockitoVersion = "5.20.0"
 val jmhVersion = "1.37"
 val confluentVersion = "8.0.1"
 val vertxVersion = "5.0.2"