JReceiver must extend android.content.BroadcastReceiver

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/setup-java@v3, noriban/sign-android-release@v5. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/