MINOR: [Java] Bump org.mockito:mockito-core in /java

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 4.11.0 to 5.8.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v4.11.0...v5.8.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

java/flight/pom.xml

@@ -60,7 +60,7 @@
                 <jdk>1.8</jdk>
             </activation>
             <properties>
-                <mockito.core.version>4.11.0</mockito.core.version>
+                <mockito.core.version>5.8.0</mockito.core.version>
                 <mockito.inline.version>4.11.0</mockito.inline.version>
             </properties>
         </profile>