Fix build release error due to local libsodium AAR dependency

[renatotelinea]

Hi,

Currently, the project fails to generate a release APK because the @s77rt/react-native-sodium module includes a local .aar file (libsodium-1.0.20.0.aar). Modern Gradle does not allow packaging a local AAR inside another AAR, which causes the build to fail.

To fix this issue, we need to remove the local .aar dependency and use a Maven-based solution for libsodium. This will allow release builds to succeed and simplify maintenance. Alternatively, we could apply a workaround by placing the .aar in android/app/libs and referencing it there, but using Maven is the preferred and cleaner solution.

Please update the project accordingly so that release builds can be generated without errors.

Thanks!