Multiple depreciation warnings

[pawelel]

Problem summary

Multiple depreciation warnings

Steps to reproduce

1. Build android project under Flutter 3.6.0

Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:21: warning: [deprecation] AsyncTask in android.os has been deprecated
import android.os.AsyncTask;
                 ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:116: warning: [deprecation] <T>getParcelableExtra(String) in Intent has been deprecated
                        final BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                                                             ^
  where T is a type-variable:
    T extends Parcelable declared in method <T>getParcelableExtra(String)
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:270: warning: [deprecation] <T>getParcelableExtra(String) in Intent has been deprecated
                        final BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                                                             ^
  where T is a type-variable:
    T extends Parcelable declared in method <T>getParcelableExtra(String)
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:514: warning: [deprecation] AsyncTask in android.os has been deprecated
                    AsyncTask.execute(() -> {
                    ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:514: warning: [deprecation] execute(Runnable) in AsyncTask has been deprecated
                    AsyncTask.execute(() -> {
                             ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:593: warning: [deprecation] disable() in BluetoothAdapter has been deprecated
                        bluetoothAdapter.disable();
                                        ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:831: warning: [deprecation] <T>getParcelableExtra(String) in Intent has been deprecated
                                    final BluetoothDevice someDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                                                                             ^
  where T is a type-variable:
    T extends Parcelable declared in method <T>getParcelableExtra(String)
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1005: warning: [deprecation] AsyncTask in android.os has been deprecated
                    AsyncTask.execute(() -> {
                    ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1005: warning: [deprecation] execute(Runnable) in AsyncTask has been deprecated
                    AsyncTask.execute(() -> {
                             ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1039: warning: [deprecation] AsyncTask in android.os has been deprecated
                        AsyncTask.execute(() -> {
                        ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1039: warning: [deprecation] execute(Runnable) in AsyncTask has been deprecated
                        AsyncTask.execute(() -> {
                                 ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1049: warning: [deprecation] AsyncTask in android.os has been deprecated
                        AsyncTask.execute(() -> {
                        ^
Pub\Cache\git\flutter_bluetooth_serial-7f66073872f609056666615c1db3b06e34fb8b6c\android\src\main\java\io\github\edufolly\flutterbluetoothserial\FlutterBluetoothSerialPlugin.java:1049: warning: [deprecation] execute(Runnable) in AsyncTask has been deprecated
                        AsyncTask.execute(() -> {

Environment

Flutter 3.6.0