Bump mockito-core from 3.12.4 to 4.5.1

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.12.4 to 4.5.1.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v3.12.4...v4.5.1)

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

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

app/build.gradle

@@ -294,7 +294,7 @@ dependencies {
     implementation 'androidx.core:core-ktx:1.7.0'
 
     testImplementation 'junit:junit:4.13.2'
-    testImplementation 'org.mockito:mockito-core:3.12.4'
+    testImplementation 'org.mockito:mockito-core:4.5.1'
     testImplementation "org.powermock:powermock-core:${powermockVersion}"
     testImplementation "org.powermock:powermock-module-junit4:${powermockVersion}"
     testImplementation "org.powermock:powermock-api-mockito2:${powermockVersion}"