update connectivity_plus package to the latest version

[AlaaEddineCharbib]

update connectivity_plus package to the latest version to avoid packages dependency resolving issues with other packages that depend on js 0.7.1 (e.g syncfusion_flutter_pdfviewer: ^25.1.39)

[FXschwartz]

@bw-flagship Any chance we could get this merged soon?

[bw-flagship]

@FXschwartz I am fine with the upgrade, but it seems that an analyzer warning was introduced that need to be fixed before merging

[FXschwartz]

@AlaaEddineCharbib I made the necessary change but don't have permission to push to your fork. The analyzer is complaining because Connectivity().checkConnectivity() returns a list of results and on line 69 of smart_network_asset_loader.dart we are doing just an equality check.

The change should be to make it use .contains like below.

  Future<bool> isInternetConnectionAvailable() async {
    final connectivityResult = await Connectivity().checkConnectivity();
    if (connectivityResult.contains(ConnectivityResult.none)) {
      return false;
    } else {
      try {
        final result = await InternetAddress.lookup('google.com');
        if (result.isNotEmpty && result[0].rawAddress.isNotEmpty) {
          return true;
        }
      } on SocketException catch (_) {
        return false;
      }
    }

    return false;
  }