Update dependencies and configuration of testing frameworks

[cristianopcortez]

This PR updates several dependencies and testing frameworks to improve project stability, performance, and testing capabilities.

Key Changes:

• Updated AGP: Upgraded to 8.4.0 for compatibility and performance improvements.

• Updated JUnit: Migrated to JUnit 5 for enhanced testing features.

• Updated Testing Frameworks:

  • Upgraded androidx.test and related libraries for improved testing capabilities.
  • Added androidx-test-runner-junit5 for JUnit 5 support.

• Updated Mocking Frameworks:

  • Migrated from nhaarman-mockito-kotlin to mockito-kotlin for better integration with Kotlin.
  • Updated mockito to the latest version for improved mocking capabilities.

• Updated Coroutines: Upgraded to the latest version for performance and bug fixes.

• Added Dependencies:

  • google-gson for JSON parsing.
  • androidx-arch-core-testing for testing architecture components.
  • navigation-testing for testing navigation components.
    Testing:

• Unit tests have been updated to use JUnit 5 and Mockito.

• UI tests have been updated to use the latest testing frameworks.

• The app has NOT been tested on various devices and emulators to ensure compatibility and functionality.