Dependencies updated, Dart 3.8+,

flutter_archive -> archive (due to compileSdk requirement on Android)

Author: philips77

example/lib/src/handlers/firmware_update_handler.dart

@@ -1,7 +1,7 @@
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:flutter_archive/flutter_archive.dart';
+import 'package:archive/archive_io.dart';
 import 'package:mcumgr_flutter_example/src/model/firmware_update_request.dart';
 import 'package:mcumgr_flutter_example/src/model/manifest.dart';
 import 'package:mcumgr_flutter_example/src/repository/firmware_image_repository.dart';
@@ -82,14 +82,12 @@ class FirmwareUnpacker extends FirmwareUpdateHandler {
 
  final firmware = request as MultiImageFirmwareUpdateRequest;
  final firmwareFileData = firmware.zipFile!;
- final firmwareFile = File('${tempDir.path}/firmware.zip');
- await firmwareFile.writeAsBytes(firmwareFileData);
+ final archive = ZipDecoder().decodeBytes(firmwareFileData);
 
  final destinationDir = Directory('${tempDir.path}/firmware');
  await destinationDir.create();
  try {
- await ZipFile.extractToDirectory(
- zipFile: firmwareFile, destinationDir: destinationDir);
+ await extractArchiveToDisk(archive, '${tempDir.path}/firmware');
  } catch (e) {
  throw Exception('Failed to unzip firmware');
  }