Update Android Gradle Plugin to 8.5.2 and Cleanup Project Configuration

[AntonHolovin]

This pull request includes several updates and cleanups to improve the project configuration:

• Android Gradle plugin update:

  • Upgraded the Android Gradle Plugin to version 8.5.2 for both the library and example projects.
  • Updated Gradle to the required version for compatibility.

• disabled Jetifier:

  • Disabled Jetifier, as it is no longer needed.

• gradle.properties cleanup:

  • Removed an unused gradle.properties file to streamline the project configuration.

• build.gradle updates:

  • Updated the build.gradle files to align with the new Android Gradle Plugin version:
  • Set Java source compatibility to Java 17.
  • Updated Kotlin options to use JVM target 17.

[Abedalkareem]

@AntonHolovin
Thanks!