Bump org.mockito:mockito-core from 5.14.2 to 5.15.2 (#362)

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.14.2 to 5.15.2.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.14.2...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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

server/build.gradle

@@ -28,7 +28,7 @@ dependencies {
     testImplementation 'org.jetbrains.teamcity:server-api:2024.12'
     testImplementation 'org.apache.commons:commons-text:1.13.0'
     testImplementation 'org.mockito:mockito-junit-jupiter:5.14.2'
-    testImplementation 'org.mockito:mockito-core:5.14.2'
+    testImplementation 'org.mockito:mockito-core:5.15.2'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.11.4'
 
     //provided by the environment, so we dont need to package it.