Bump org.mockito:mockito-core from 5.12.0 to 5.13.0 in /buildSrc

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.12.0 to 5.13.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.12.0...v5.13.0)

---
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]>

buildSrc/build.gradle

@@ -16,7 +16,7 @@ dependencies {
     implementation 'com.android.tools.build:gradle:8.2.2'
     implementation 'org.jetbrains:annotations:24.1.0'
     testImplementation 'junit:junit:4.13.2'
-    testImplementation 'org.mockito:mockito-core:5.12.0'
+    testImplementation 'org.mockito:mockito-core:5.13.0'
 }
 
 validatePlugins {