chore(deps): bump org.mockito.kotlin:mockito-kotlin

Bumps [org.mockito.kotlin:mockito-kotlin](https://github.com/mockito/mockito-kotlin) from 6.0.0 to 6.2.1.
- [Release notes](https://github.com/mockito/mockito-kotlin/releases)
- [Commits](mockito/mockito-kotlin@v6.0.0...v6.2.1)

---
updated-dependencies:
- dependency-name: org.mockito.kotlin:mockito-kotlin
  dependency-version: 6.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/auth/amplify_auth_cognito/android/build.gradle

@@ -60,7 +60,7 @@ dependencies {
     implementation 'androidx.browser:browser:1.9.0'
 
     testImplementation 'junit:junit:4.13.2'
-    testImplementation 'org.mockito.kotlin:mockito-kotlin:6.0.0'
+    testImplementation 'org.mockito.kotlin:mockito-kotlin:6.2.1'
     testImplementation 'androidx.test:core:1.7.0'
     testImplementation 'org.robolectric:robolectric:4.15.1'
     testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.10.2'