build(deps): bump org.mockito:mockito-bom from 5.20.0 to 5.21.0

Bumps [org.mockito:mockito-bom](https://github.com/mockito/mockito) from 5.20.0 to 5.21.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.20.0...v5.21.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-bom
  dependency-version: 5.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -60,7 +60,7 @@
         <maven-enforcer-plugin.version>3.6.2</maven-enforcer-plugin.version>
         <maven-resources-plugin.version>3.3.1</maven-resources-plugin.version>
         <maven-surefire-plugin.version>3.5.4</maven-surefire-plugin.version>
-        <mockito.version>5.20.0</mockito.version>
+        <mockito.version>5.21.0</mockito.version>
         <neo4j.java.driver.version>4.4.21</neo4j.java.driver.version>
         <netty-bom.version>4.1.128.Final</netty-bom.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>